256159061246 has 32 divisors (see below), whose sum is σ = 421968335328. Its totient is φ = 115660247040.

The previous prime is 256159061243. The next prime is 256159061267. The reversal of 256159061246 is 642160951652.

It is a self number, because there is not a number n which added to its sum of digits gives 256159061246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256159061243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2829986 + ... + 2919098.

It is an arithmetic number, because the mean of its divisors is an integer number (13186510479).

Almost surely, 2^256159061246 is an apocalyptic number.

256159061246 is a deficient number, since it is larger than the sum of its proper divisors (165809274082).

256159061246 is a wasteful number, since it uses less digits than its factorization.

256159061246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89996.

The product of its (nonzero) digits is 777600, while the sum is 47.

The spelling of 256159061246 in words is "two hundred fifty-six billion, one hundred fifty-nine million, sixty-one thousand, two hundred forty-six".