231454204646640 has 80 divisors (see below), whose sum is σ = 755271615177600. Its totient is φ = 58472641172736.

The previous prime is 231454204646629. The next prime is 231454204646771. The reversal of 231454204646640 is 46646402454132.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

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, 25378745950 + ... + 25378755069.

It is an arithmetic number, because the mean of its divisors is an integer number (9440895189720).

Almost surely, 2^{231454204646640} is an apocalyptic number.

231454204646640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231454204646640 is an abundant number, since it is smaller than the sum of its proper divisors (523817410530960).

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

231454204646640 is a wasteful number, since it uses less digits than its factorization.

231454204646640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50757501054 (or 50757501048 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 51.

The spelling of 231454204646640 in words is "two hundred thirty-one trillion, four hundred fifty-four billion, two hundred four million, six hundred forty-six thousand, six hundred forty".