256406146422 has 16 divisors (see below), whose sum is σ = 539802413760. Its totient is φ = 80970361992.

The previous prime is 256406146379. The next prime is 256406146457. The reversal of 256406146422 is 224641604652.

It is a super-2 number, since 2×256406146422² (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 7 ways as a sum of consecutive naturals, for example, 1124588248 + ... + 1124588475.

It is an arithmetic number, because the mean of its divisors is an integer number (33737650860).

Almost surely, 2^256406146422 is an apocalyptic number.

256406146422 is an abundant number, since it is smaller than the sum of its proper divisors (283396267338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256406146422 is a wasteful number, since it uses less digits than its factorization.

256406146422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2249176747.

The product of its (nonzero) digits is 552960, while the sum is 42.

The spelling of 256406146422 in words is "two hundred fifty-six billion, four hundred six million, one hundred forty-six thousand, four hundred twenty-two".