257996699772 has 48 divisors (see below), whose sum is σ = 691448486400. Its totient is φ = 73342919232.

The previous prime is 257996699731. The next prime is 257996699773. The reversal of 257996699772 is 277996699752.

257996699772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257996699773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7700343 + ... + 7733774.

It is an arithmetic number, because the mean of its divisors is an integer number (14405176800).

Almost surely, 2^257996699772 is an apocalyptic number.

It is an amenable number.

257996699772 is an abundant number, since it is smaller than the sum of its proper divisors (433451786628).

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

257996699772 is a wasteful number, since it uses less digits than its factorization.

257996699772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15434330 (or 15434328 counting only the distinct ones).

The product of its digits is 1620304560, while the sum is 78.

The spelling of 257996699772 in words is "two hundred fifty-seven billion, nine hundred ninety-six million, six hundred ninety-nine thousand, seven hundred seventy-two".