257665576672 has 24 divisors (see below), whose sum is σ = 579747548016. Its totient is φ = 110428104192.

The previous prime is 257665576661. The next prime is 257665576673. The reversal of 257665576672 is 276675566752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257665576673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 575146153 + ... + 575146600.

It is an arithmetic number, because the mean of its divisors is an integer number (24156147834).

Almost surely, 2^257665576672 is an apocalyptic number.

It is an amenable number.

257665576672 is an abundant number, since it is smaller than the sum of its proper divisors (322081971344).

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

257665576672 is a wasteful number, since it uses less digits than its factorization.

257665576672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150292770 (or 1150292762 counting only the distinct ones).

The product of its digits is 222264000, while the sum is 64.

The spelling of 257665576672 in words is "two hundred fifty-seven billion, six hundred sixty-five million, five hundred seventy-six thousand, six hundred seventy-two".