257420569972 has 12 divisors (see below), whose sum is σ = 458121353760. Its totient is φ = 126528754616.

The previous prime is 257420569961. The next prime is 257420569993. The reversal of 257420569972 is 279965024752.

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, 545382328 + ... + 545382799.

It is an arithmetic number, because the mean of its divisors is an integer number (38176779480).

Almost surely, 2^257420569972 is an apocalyptic number.

It is an amenable number.

257420569972 is a deficient number, since it is larger than the sum of its proper divisors (200700783788).

257420569972 is a wasteful number, since it uses less digits than its factorization.

257420569972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090765190 (or 1090765188 counting only the distinct ones).

The product of its (nonzero) digits is 19051200, while the sum is 58.

The spelling of 257420569972 in words is "two hundred fifty-seven billion, four hundred twenty million, five hundred sixty-nine thousand, nine hundred seventy-two".