255636604032 has 128 divisors (see below), whose sum is σ = 719208201600. Its totient is φ = 80174039040.

The previous prime is 255636604021. The next prime is 255636604037. The reversal of 255636604032 is 230406636552.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (255636604037) 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, 38374782 + ... + 38381442.

It is an arithmetic number, because the mean of its divisors is an integer number (5618814075).

Almost surely, 2^255636604032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255636604032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359604100800).

255636604032 is an abundant number, since it is smaller than the sum of its proper divisors (463571597568).

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

255636604032 is a wasteful number, since it uses less digits than its factorization.

255636604032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12574 (or 12562 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 42.

The spelling of 255636604032 in words is "two hundred fifty-five billion, six hundred thirty-six million, six hundred four thousand, thirty-two".