257276294792 has 64 divisors (see below), whose sum is σ = 532040745600. Its totient is φ = 115657943040.

The previous prime is 257276294753. The next prime is 257276294839. The reversal of 257276294792 is 297492672752.

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, 13297958 + ... + 13317290.

It is an arithmetic number, because the mean of its divisors is an integer number (8313136650).

Almost surely, 2^257276294792 is an apocalyptic number.

257276294792 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 257276294792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266020372800).

257276294792 is an abundant number, since it is smaller than the sum of its proper divisors (274764450808).

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

257276294792 is a wasteful number, since it uses less digits than its factorization.

257276294792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21006 (or 21002 counting only the distinct ones).

The product of its digits is 53343360, while the sum is 62.

The spelling of 257276294792 in words is "two hundred fifty-seven billion, two hundred seventy-six million, two hundred ninety-four thousand, seven hundred ninety-two".