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131520188368460 = 22547269520130461
BaseRepresentation
bin11101111001110111101110…
…000110111100011001001100
3122020200012121001121210200202
4131321313232012330121030
5114214311321210242320
61143415312422313032
736463006605505223
oct3571675606743114
9566605531553622
10131520188368460
11389a7442678651
12129015b0b88778
1358503ba3ba338
14246987ab45cba
15103121debbb75
hex779dee1bc64c

131520188368460 has 48 divisors (see below), whose sum is σ = 283117413075840. Its totient is φ = 51297346487040.

The previous prime is 131520188368411. The next prime is 131520188368489. The reversal of 131520188368460 is 64863881025131.

It is a junction number, because it is equal to n+sod(n) for n = 131520188368396 and 131520188368405.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259812371 + ... + 260318090.

It is an arithmetic number, because the mean of its divisors is an integer number (5898279439080).

Almost surely, 2131520188368460 is an apocalyptic number.

131520188368460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131520188368460 is an abundant number, since it is smaller than the sum of its proper divisors (151597224707380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131520188368460 is a wasteful number, since it uses less digits than its factorization.

131520188368460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520130786 (or 520130784 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 56.

The spelling of 131520188368460 in words is "one hundred thirty-one trillion, five hundred twenty billion, one hundred eighty-eight million, three hundred sixty-eight thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 47 94 188 235 269 470 538 940 1076 1345 2690 5380 12643 25286 50572 63215 126430 252860 520130461 1040260922 2080521844 2600652305 5201304610 10402609220 24446131667 48892263334 97784526668 122230658335 139915094009 244461316670 279830188018 488922633340 559660376036 699575470045 1399150940090 2798301880180 6576009418423 13152018836846 26304037673692 32880047092115 65760094184230 131520188368460