131681901929905 has 16 divisors (see below), whose sum is σ = 158131470182400. Its totient is φ = 105270065409600.

The previous prime is 131681901929789. The next prime is 131681901929917. The reversal of 131681901929905 is 509929109186131.

It is not a de Polignac number, because 131681901929905 - 2⁹ = 131681901929393 is a prime.

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, 597490480 + ... + 597710830.

It is an arithmetic number, because the mean of its divisors is an integer number (9883216886400).

Almost surely, 2^{131681901929905} is an apocalyptic number.

It is an amenable number.

131681901929905 is a deficient number, since it is larger than the sum of its proper divisors (26449568252495).

131681901929905 is a wasteful number, since it uses less digits than its factorization.

131681901929905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305424.

The product of its (nonzero) digits is 9447840, while the sum is 64.

The spelling of 131681901929905 in words is "one hundred thirty-one trillion, six hundred eighty-one billion, nine hundred one million, nine hundred twenty-nine thousand, nine hundred five".