257211716155160 has 64 divisors (see below), whose sum is σ = 629294684316480. Its totient is φ = 94048436298240.

The previous prime is 257211716155099. The next prime is 257211716155237. The reversal of 257211716155160 is 61551617112752.

It is a junction number, because it is equal to n+sod(n) for n = 257211716155099 and 257211716155108.

It is a congruent number.

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, 2401101371 + ... + 2401208490.

It is an arithmetic number, because the mean of its divisors is an integer number (9832729442445).

Almost surely, 2^{257211716155160} is an apocalyptic number.

257211716155160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

257211716155160 is an abundant number, since it is smaller than the sum of its proper divisors (372082968161320).

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

257211716155160 is a wasteful number, since it uses less digits than its factorization.

257211716155160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4802309988 (or 4802309984 counting only the distinct ones).

The product of its (nonzero) digits is 882000, while the sum is 50.

The spelling of 257211716155160 in words is "two hundred fifty-seven trillion, two hundred eleven billion, seven hundred sixteen million, one hundred fifty-five thousand, one hundred sixty".