257723455772 has 12 divisors (see below), whose sum is σ = 453038542656. Its totient is φ = 128283872160.

The previous prime is 257723455757. The next prime is 257723455807. The reversal of 257723455772 is 277554327752.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144462929 + ... + 144464712.

It is an arithmetic number, because the mean of its divisors is an integer number (37753211888).

Almost surely, 2^257723455772 is an apocalyptic number.

It is an amenable number.

257723455772 is a deficient number, since it is larger than the sum of its proper divisors (195315086884).

257723455772 is a wasteful number, since it uses less digits than its factorization.

257723455772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288927868 (or 288927866 counting only the distinct ones).

The product of its digits is 28812000, while the sum is 56.

The spelling of 257723455772 in words is "two hundred fifty-seven billion, seven hundred twenty-three million, four hundred fifty-five thousand, seven hundred seventy-two".