131645443458 has 16 divisors (see below), whose sum is σ = 265706400960. Its totient is φ = 43479228816.

The previous prime is 131645443453. The next prime is 131645443481. The reversal of 131645443458 is 854344546131.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131645443453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100645710 + ... + 100647017.

It is an arithmetic number, because the mean of its divisors is an integer number (16606650060).

Almost surely, 2^131645443458 is an apocalyptic number.

131645443458 is an abundant number, since it is smaller than the sum of its proper divisors (134060957502).

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

131645443458 is a wasteful number, since it uses less digits than its factorization.

131645443458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201292841.

The product of its digits is 2764800, while the sum is 48.

Adding to 131645443458 its reverse (854344546131), we get a palindrome (985989989589).

The spelling of 131645443458 in words is "one hundred thirty-one billion, six hundred forty-five million, four hundred forty-three thousand, four hundred fifty-eight".