257136770338 has 16 divisors (see below), whose sum is σ = 440820442944. Its totient is φ = 110197835280.

The previous prime is 257136770321. The next prime is 257136770339. The reversal of 257136770338 is 833077631752.

It is a super-2 number, since 2×257136770338² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (257136770339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160581 + ... + 734887.

It is an arithmetic number, because the mean of its divisors is an integer number (27551277684).

Almost surely, 2^257136770338 is an apocalyptic number.

257136770338 is a deficient number, since it is larger than the sum of its proper divisors (183683672606).

257136770338 is a wasteful number, since it uses less digits than its factorization.

257136770338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606297.

The product of its (nonzero) digits is 4445280, while the sum is 52.

The spelling of 257136770338 in words is "two hundred fifty-seven billion, one hundred thirty-six million, seven hundred seventy thousand, three hundred thirty-eight".