255584911680 has 672 divisors, whose sum is σ = 1052445139200. Its totient is φ = 57828556800.

The previous prime is 255584911661. The next prime is 255584911697. The reversal of 255584911680 is 86119485552.

255584911680 is a `hidden beast` number, since 2 + 5 + 558 + 4 + 9 + 1 + 1 + 6 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 54973996 + ... + 54978644.

It is an arithmetic number, because the mean of its divisors is an integer number (1566138600).

Almost surely, 2^255584911680 is an apocalyptic number.

255584911680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255584911680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (526222569600).

255584911680 is an abundant number, since it is smaller than the sum of its proper divisors (796860227520).

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

255584911680 is a wasteful number, since it uses less digits than its factorization.

255584911680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4789 (or 4767 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 54.

The spelling of 255584911680 in words is "two hundred fifty-five billion, five hundred eighty-four million, nine hundred eleven thousand, six hundred eighty".