257673052680 has 32 divisors (see below), whose sum is σ = 773019158400. Its totient is φ = 68712814016.

The previous prime is 257673052657. The next prime is 257673052709. The reversal of 257673052680 is 86250376752.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1073637600 + ... + 1073637839.

It is an arithmetic number, because the mean of its divisors is an integer number (24156848700).

Almost surely, 2^257673052680 is an apocalyptic number.

257673052680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

257673052680 is an abundant number, since it is smaller than the sum of its proper divisors (515346105720).

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

257673052680 is a wasteful number, since it uses less digits than its factorization.

257673052680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2147275453 (or 2147275449 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 51.

The spelling of 257673052680 in words is "two hundred fifty-seven billion, six hundred seventy-three million, fifty-two thousand, six hundred eighty".