255561607204 has 24 divisors (see below), whose sum is σ = 450563299200. Its totient is φ = 126831877920.

The previous prime is 255561607193. The next prime is 255561607207. The reversal of 255561607204 is 402706165552.

It is a super-3 number, since 3×255561607204³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (255561607207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57477 + ... + 717235.

It is an arithmetic number, because the mean of its divisors is an integer number (18773470800).

Almost surely, 2^255561607204 is an apocalyptic number.

It is an amenable number.

255561607204 is a deficient number, since it is larger than the sum of its proper divisors (195001691996).

255561607204 is a wasteful number, since it uses less digits than its factorization.

255561607204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660483 (or 660481 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 43.

The spelling of 255561607204 in words is "two hundred fifty-five billion, five hundred sixty-one million, six hundred seven thousand, two hundred four".