131689831665601 has 16 divisors (see below), whose sum is σ = 144076587001920. Its totient is φ = 119372272645120.

The previous prime is 131689831665593. The next prime is 131689831665629. The reversal of 131689831665601 is 106566138986131.

It is not a de Polignac number, because 131689831665601 - 2³ = 131689831665593 is a prime.

It is a super-2 number, since 2×131689831665601² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131689831665661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69868710 + ... + 71728768.

It is an arithmetic number, because the mean of its divisors is an integer number (9004786687620).

Almost surely, 2^{131689831665601} is an apocalyptic number.

131689831665601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131689831665601 is a deficient number, since it is larger than the sum of its proper divisors (12386755336319).

131689831665601 is a wasteful number, since it uses less digits than its factorization.

131689831665601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1878656.

The product of its (nonzero) digits is 33592320, while the sum is 64.

The spelling of 131689831665601 in words is "one hundred thirty-one trillion, six hundred eighty-nine billion, eight hundred thirty-one million, six hundred sixty-five thousand, six hundred one".