257144664752 has 10 divisors (see below), whose sum is σ = 498217787988. Its totient is φ = 128572332368.

The previous prime is 257144664719. The next prime is 257144664781. The reversal of 257144664752 is 257466441752.

257144664752 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×257144664752² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 257144664694 and 257144664703.

It is an unprimeable number.

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, 8035770758 + ... + 8035770789.

Almost surely, 2^257144664752 is an apocalyptic number.

It is an amenable number.

257144664752 is a deficient number, since it is larger than the sum of its proper divisors (241073123236).

257144664752 is a wasteful number, since it uses less digits than its factorization.

257144664752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16071541555 (or 16071541549 counting only the distinct ones).

The product of its digits is 11289600, while the sum is 53.

The spelling of 257144664752 in words is "two hundred fifty-seven billion, one hundred forty-four million, six hundred sixty-four thousand, seven hundred fifty-two".