131551146444 has 24 divisors (see below), whose sum is σ = 325008715248. Its totient is φ = 41270947840.

The previous prime is 131551146421. The next prime is 131551146451. The reversal of 131551146444 is 444641155131.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322429077 + ... + 322429484.

It is an arithmetic number, because the mean of its divisors is an integer number (13542029802).

Almost surely, 2^131551146444 is an apocalyptic number.

It is an amenable number.

131551146444 is an abundant number, since it is smaller than the sum of its proper divisors (193457568804).

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

131551146444 is a wasteful number, since it uses less digits than its factorization.

131551146444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644858585 (or 644858583 counting only the distinct ones).

The product of its digits is 115200, while the sum is 39.

The spelling of 131551146444 in words is "one hundred thirty-one billion, five hundred fifty-one million, one hundred forty-six thousand, four hundred forty-four".