257332891092 has 12 divisors (see below), whose sum is σ = 600443412576. Its totient is φ = 85777630360.

The previous prime is 257332891061. The next prime is 257332891183. The reversal of 257332891092 is 290198233752.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10722203784 + ... + 10722203807.

It is an arithmetic number, because the mean of its divisors is an integer number (50036951048).

Almost surely, 2^257332891092 is an apocalyptic number.

It is an amenable number.

257332891092 is an abundant number, since it is smaller than the sum of its proper divisors (343110521484).

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

257332891092 is a wasteful number, since it uses less digits than its factorization.

257332891092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21444407598 (or 21444407596 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 51.

The spelling of 257332891092 in words is "two hundred fifty-seven billion, three hundred thirty-two million, eight hundred ninety-one thousand, ninety-two".