255687786552 has 64 divisors (see below), whose sum is σ = 697413951360. Its totient is φ = 77471856000.

The previous prime is 255687786547. The next prime is 255687786593.

255687786552 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×255687786552² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2333802 + ... + 2440902.

It is an arithmetic number, because the mean of its divisors is an integer number (10897092990).

Almost surely, 2^255687786552 is an apocalyptic number.

255687786552 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

255687786552 is an abundant number, since it is smaller than the sum of its proper divisors (441726164808).

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

255687786552 is a wasteful number, since it uses less digits than its factorization.

255687786552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116164 (or 116160 counting only the distinct ones).

The product of its digits is 282240000, while the sum is 66.

The spelling of 255687786552 in words is "two hundred fifty-five billion, six hundred eighty-seven million, seven hundred eighty-six thousand, five hundred fifty-two".