257530991792 has 10 divisors (see below), whose sum is σ = 498966296628. Its totient is φ = 128765495888.

The previous prime is 257530991759. The next prime is 257530991797. The reversal of 257530991792 is 297199035752.

It is a happy number.

257530991792 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (257530991797) 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 as a sum of consecutive naturals, namely, 8047843478 + ... + 8047843509.

Almost surely, 2^257530991792 is an apocalyptic number.

It is an amenable number.

257530991792 is a deficient number, since it is larger than the sum of its proper divisors (241435304836).

257530991792 is a wasteful number, since it uses less digits than its factorization.

257530991792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16095686995 (or 16095686989 counting only the distinct ones).

The product of its (nonzero) digits is 10716300, while the sum is 59.

The spelling of 257530991792 in words is "two hundred fifty-seven billion, five hundred thirty million, nine hundred ninety-one thousand, seven hundred ninety-two".