257144972732 has 24 divisors (see below), whose sum is σ = 451954870080. Its totient is φ = 128015173440.

The previous prime is 257144972701. The next prime is 257144972741. The reversal of 257144972732 is 237279441752.

It is a super-2 number, since 2×257144972732² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7934882 + ... + 7967222.

It is an arithmetic number, because the mean of its divisors is an integer number (18831452920).

Almost surely, 2^257144972732 is an apocalyptic number.

It is an amenable number.

257144972732 is a deficient number, since it is larger than the sum of its proper divisors (194809897348).

257144972732 is a wasteful number, since it uses less digits than its factorization.

257144972732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40901 (or 40899 counting only the distinct ones).

The product of its digits is 5927040, while the sum is 53.

The spelling of 257144972732 in words is "two hundred fifty-seven billion, one hundred forty-four million, nine hundred seventy-two thousand, seven hundred thirty-two".