256007642222 has 4 divisors (see below), whose sum is σ = 384011463336. Its totient is φ = 128003821110.

The previous prime is 256007642197. The next prime is 256007642249. The reversal of 256007642222 is 222246700652.

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, 64001910554 + ... + 64001910557.

It is an arithmetic number, because the mean of its divisors is an integer number (96002865834).

Almost surely, 2^256007642222 is an apocalyptic number.

256007642222 is a deficient number, since it is larger than the sum of its proper divisors (128003821114).

256007642222 is a wasteful number, since it uses less digits than its factorization.

256007642222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128003821113.

The product of its (nonzero) digits is 161280, while the sum is 38.

The spelling of 256007642222 in words is "two hundred fifty-six billion, seven million, six hundred forty-two thousand, two hundred twenty-two".