256136546204 has 24 divisors (see below), whose sum is σ = 558843374208. Its totient is φ = 99793459440.

The previous prime is 256136546147. The next prime is 256136546221. The reversal of 256136546204 is 402645631652.

It is a happy number.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 415805774 + ... + 415806389.

It is an arithmetic number, because the mean of its divisors is an integer number (23285140592).

Almost surely, 2^256136546204 is an apocalyptic number.

It is an amenable number.

256136546204 is an abundant number, since it is smaller than the sum of its proper divisors (302706828004).

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

256136546204 is a wasteful number, since it uses less digits than its factorization.

256136546204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831612185 (or 831612183 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 44.

The spelling of 256136546204 in words is "two hundred fifty-six billion, one hundred thirty-six million, five hundred forty-six thousand, two hundred four".