255843535840 has 48 divisors (see below), whose sum is σ = 619172573040. Its totient is φ = 99841377280.

The previous prime is 255843535823. The next prime is 255843535841. The reversal of 255843535840 is 48535348552.

255843535840 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×255843535840² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255843535841) 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, 19493710 + ... + 19506829.

It is an arithmetic number, because the mean of its divisors is an integer number (12899428605).

Almost surely, 2^255843535840 is an apocalyptic number.

255843535840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255843535840 is an abundant number, since it is smaller than the sum of its proper divisors (363329037200).

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

255843535840 is a wasteful number, since it uses less digits than its factorization.

255843535840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39000595 (or 39000587 counting only the distinct ones).

The product of its (nonzero) digits is 11520000, while the sum is 52.

The spelling of 255843535840 in words is "two hundred fifty-five billion, eight hundred forty-three million, five hundred thirty-five thousand, eight hundred forty".