257135682670 has 64 divisors (see below), whose sum is σ = 490614921216. Its totient is φ = 96827258880.

The previous prime is 257135682667. The next prime is 257135682707. The reversal of 257135682670 is 76286531752.

It is a happy number.

257135682670 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×257135682670² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18747115 + ... + 18760825.

It is an arithmetic number, because the mean of its divisors is an integer number (7665858144).

Almost surely, 2^257135682670 is an apocalyptic number.

257135682670 is a deficient number, since it is larger than the sum of its proper divisors (233479238546).

257135682670 is a wasteful number, since it uses less digits than its factorization.

257135682670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15025.

The product of its (nonzero) digits is 4233600, while the sum is 52.

The spelling of 257135682670 in words is "two hundred fifty-seven billion, one hundred thirty-five million, six hundred eighty-two thousand, six hundred seventy".