257057014620722 has 4 divisors (see below), whose sum is σ = 385585521931086. Its totient is φ = 128528507310360.

The previous prime is 257057014620691. The next prime is 257057014620751. The reversal of 257057014620722 is 227026410750752.

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

It can be written as a sum of positive squares in only one way, i.e., 167473648027921 + 89583366592801 = 12941161^2 + 9464849^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64264253655179 + ... + 64264253655182.

Almost surely, 2^{257057014620722} is an apocalyptic number.

257057014620722 is a deficient number, since it is larger than the sum of its proper divisors (128528507310364).

257057014620722 is a wasteful number, since it uses less digits than its factorization.

257057014620722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128528507310363.

The product of its (nonzero) digits is 3292800, while the sum is 50.

The spelling of 257057014620722 in words is "two hundred fifty-seven trillion, fifty-seven billion, fourteen million, six hundred twenty thousand, seven hundred twenty-two".