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131507664460 = 22542191558517
BaseRepresentation
bin111101001111001110…
…1111011011001001100
3110120102222212112110021
41322132131323121030
54123311430230320
6140225213351524
712333611463364
oct1723635733114
9416388775407
10131507664460
1150854714817
12215a17985a4
13c52a34b593
1465178059a4
15364a3c3daa
hex1e9e77b64c

131507664460 has 24 divisors (see below), whose sum is σ = 276231730320. Its totient is φ = 52590563904.

The previous prime is 131507664427. The next prime is 131507664487. The reversal of 131507664460 is 64466705131.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 694879 + ... + 863638.

It is an arithmetic number, because the mean of its divisors is an integer number (11509655430).

Almost surely, 2131507664460 is an apocalyptic number.

131507664460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131507664460 is an abundant number, since it is smaller than the sum of its proper divisors (144724065860).

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

131507664460 is a wasteful number, since it uses less digits than its factorization.

131507664460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1562745 (or 1562743 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 131507664460 in words is "one hundred thirty-one billion, five hundred seven million, six hundred sixty-four thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 4219 8438 16876 21095 42190 84380 1558517 3117034 6234068 7792585 15585170 31170340 6575383223 13150766446 26301532892 32876916115 65753832230 131507664460