257953616974 has 4 divisors (see below), whose sum is σ = 386930425464. Its totient is φ = 128976808486.

The previous prime is 257953616957. The next prime is 257953617007. The reversal of 257953616974 is 479616359752.

257953616974 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

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, 64488404242 + ... + 64488404245.

It is an arithmetic number, because the mean of its divisors is an integer number (96732606366).

Almost surely, 2^257953616974 is an apocalyptic number.

257953616974 is a deficient number, since it is larger than the sum of its proper divisors (128976808490).

257953616974 is a wasteful number, since it uses less digits than its factorization.

257953616974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128976808489.

The product of its digits is 85730400, while the sum is 64.

The spelling of 257953616974 in words is "two hundred fifty-seven billion, nine hundred fifty-three million, six hundred sixteen thousand, nine hundred seventy-four".