257137623164 has 6 divisors (see below), whose sum is σ = 449990840544. Its totient is φ = 128568811580.

The previous prime is 257137623143. The next prime is 257137623181. The reversal of 257137623164 is 461326731752.

It is a happy number.

It is a super-2 number, since 2×257137623164² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32142202892 + ... + 32142202899.

It is an arithmetic number, because the mean of its divisors is an integer number (74998473424).

Almost surely, 2^257137623164 is an apocalyptic number.

It is an amenable number.

257137623164 is a deficient number, since it is larger than the sum of its proper divisors (192853217380).

257137623164 is a wasteful number, since it uses less digits than its factorization.

257137623164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64284405795 (or 64284405793 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 47.

The spelling of 257137623164 in words is "two hundred fifty-seven billion, one hundred thirty-seven million, six hundred twenty-three thousand, one hundred sixty-four".