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131388137575 = 5217309148559
BaseRepresentation
bin111101001011101010…
…1111110000001100111
3110120010122221221101121
41322113111332001213
54123040330400300
6140205303434411
712330630512452
oct1722725760147
9416118857347
10131388137575
11507a31a6472
1221569755a07
13c50b65bb06
1465059b0499
15363eb6381a
hex1e9757e067

131388137575 has 12 divisors (see below), whose sum is σ = 172504896480. Its totient is φ = 98927538560.

The previous prime is 131388137567. The next prime is 131388137627. The reversal of 131388137575 is 575731883131.

It is not a de Polignac number, because 131388137575 - 23 = 131388137567 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154573855 + ... + 154574704.

It is an arithmetic number, because the mean of its divisors is an integer number (14375408040).

Almost surely, 2131388137575 is an apocalyptic number.

131388137575 is a deficient number, since it is larger than the sum of its proper divisors (41116758905).

131388137575 is a wasteful number, since it uses less digits than its factorization.

131388137575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309148586 (or 309148581 counting only the distinct ones).

The product of its digits is 2116800, while the sum is 52.

The spelling of 131388137575 in words is "one hundred thirty-one billion, three hundred eighty-eight million, one hundred thirty-seven thousand, five hundred seventy-five".

Divisors: 1 5 17 25 85 425 309148559 1545742795 5255525503 7728713975 26277627515 131388137575