255577993776 has 360 divisors, whose sum is σ = 840984481584. Its totient is φ = 72242150400.

The previous prime is 255577993757. The next prime is 255577993799. The reversal of 255577993776 is 677399775552.

It is a super-2 number, since 2×255577993776² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 364590226 + ... + 364590926.

Almost surely, 2^255577993776 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 255577993776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (420492240792).

255577993776 is an abundant number, since it is smaller than the sum of its proper divisors (585406487808).

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

255577993776 is a wasteful number, since it uses less digits than its factorization.

255577993776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209 (or 1193 counting only the distinct ones).

The product of its digits is 875164500, while the sum is 72.

The spelling of 255577993776 in words is "two hundred fifty-five billion, five hundred seventy-seven million, nine hundred ninety-three thousand, seven hundred seventy-six".