131281897546989 has 24 divisors (see below), whose sum is σ = 216851711207040. Its totient is φ = 74972400460128.

The previous prime is 131281897546951. The next prime is 131281897547089. The reversal of 131281897546989 is 989645798182131.

131281897546989 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 8 + 1 + 8 + 9 + 75 + 469 + 89 = 666.

It is not a de Polignac number, because 131281897546989 - 2²⁷ = 131281763329261 is a prime.

It is a super-2 number, since 2×131281897546989² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131281897545989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 636378129 + ... + 636584390.

It is an arithmetic number, because the mean of its divisors is an integer number (9035487966960).

Almost surely, 2^{131281897546989} is an apocalyptic number.

It is an amenable number.

131281897546989 is a deficient number, since it is larger than the sum of its proper divisors (85569813660051).

131281897546989 is a wasteful number, since it uses less digits than its factorization.

131281897546989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272964169 (or 1272964166 counting only the distinct ones).

The product of its digits is 1881169920, while the sum is 81.

The spelling of 131281897546989 in words is "one hundred thirty-one trillion, two hundred eighty-one billion, eight hundred ninety-seven million, five hundred forty-six thousand, nine hundred eighty-nine".