256101562542 has 32 divisors (see below), whose sum is σ = 586726947072. Its totient is φ = 73002881664.

The previous prime is 256101562501. The next prime is 256101562573. The reversal of 256101562542 is 245265101652.

It is a self number, because there is not a number n which added to its sum of digits gives 256101562542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7022988 + ... + 7059359.

It is an arithmetic number, because the mean of its divisors is an integer number (18335217096).

Almost surely, 2^256101562542 is an apocalyptic number.

256101562542 is an abundant number, since it is smaller than the sum of its proper divisors (330625384530).

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

256101562542 is a wasteful number, since it uses less digits than its factorization.

256101562542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14082792.

The product of its (nonzero) digits is 144000, while the sum is 39.

The spelling of 256101562542 in words is "two hundred fifty-six billion, one hundred one million, five hundred sixty-two thousand, five hundred forty-two".