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128426255471360 = 285711331383907
BaseRepresentation
bin11101001100110110010001…
…010101100101001100000000
3121211201102121120000221112202
4131030312101111211030000
5113313113432400040420
61133050112435012332
736023330222010230
oct3514662125451400
9554642546027482
10128426255471360
1137a142a616a000
12124a1a5113a0a8
13568770c00c722
14239dc148a7cc0
15eca9dcecd575
hex74cd91565300

128426255471360 has 1152 divisors, whose sum is σ = 400654721875968. Its totient is φ = 38593964851200.

The previous prime is 128426255471357. The next prime is 128426255471377. The reversal of 128426255471360 is 63174552624821.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a junction number, because it is equal to n+sod(n) for n = 128426255471296 and 128426255471305.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 141594548027 + ... + 141594548933.

It is an arithmetic number, because the mean of its divisors is an integer number (347790557184).

Almost surely, 2128426255471360 is an apocalyptic number.

128426255471360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128426255471360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200327360937984).

128426255471360 is an abundant number, since it is smaller than the sum of its proper divisors (272228466404608).

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

128426255471360 is an equidigital number, since it uses as much as digits as its factorization.

128426255471360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1382 (or 1346 counting only the distinct ones).

The product of its (nonzero) digits is 19353600, while the sum is 56.

The spelling of 128426255471360 in words is "one hundred twenty-eight trillion, four hundred twenty-six billion, two hundred fifty-five million, four hundred seventy-one thousand, three hundred sixty".