255516615552 has 64 divisors (see below), whose sum is σ = 740417477760. Its totient is φ = 77429276160.

The previous prime is 255516615547. The next prime is 255516615577.

255516615552 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 30241588 + ... + 30250035.

It is an arithmetic number, because the mean of its divisors is an integer number (11569023090).

Almost surely, 2^255516615552 is an apocalyptic number.

255516615552 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

255516615552 is an abundant number, since it is smaller than the sum of its proper divisors (484900862208).

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

255516615552 is a wasteful number, since it uses less digits than its factorization.

255516615552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60491651 (or 60491639 counting only the distinct ones).

The product of its digits is 2250000, while the sum is 48.

The spelling of 255516615552 in words is "two hundred fifty-five billion, five hundred sixteen million, six hundred fifteen thousand, five hundred fifty-two".