256642052662 has 8 divisors (see below), whose sum is σ = 389836029600. Its totient is φ = 126696709464.

The previous prime is 256642052657. The next prime is 256642052677. The reversal of 256642052662 is 266250246652.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 812158237 + ... + 812158552.

It is an arithmetic number, because the mean of its divisors is an integer number (48729503700).

Almost surely, 2^256642052662 is an apocalyptic number.

256642052662 is a deficient number, since it is larger than the sum of its proper divisors (133193976938).

256642052662 is a wasteful number, since it uses less digits than its factorization.

256642052662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1624316870.

The product of its (nonzero) digits is 2073600, while the sum is 46.

The spelling of 256642052662 in words is "two hundred fifty-six billion, six hundred forty-two million, fifty-two thousand, six hundred sixty-two".