255870089780 has 24 divisors (see below), whose sum is σ = 540433133352. Its totient is φ = 101756427392.

The previous prime is 255870089773. The next prime is 255870089809. The reversal of 255870089780 is 87980078552.

It can be written as a sum of positive squares in 4 ways, for example, as 37050090256 + 218819999524 = 192484^2 + 467782^2 .

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, 36971987 + ... + 36978906.

It is an arithmetic number, because the mean of its divisors is an integer number (22518047223).

Almost surely, 2^255870089780 is an apocalyptic number.

255870089780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255870089780 is an abundant number, since it is smaller than the sum of its proper divisors (284563043572).

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

255870089780 is a wasteful number, since it uses less digits than its factorization.

255870089780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73951075 (or 73951073 counting only the distinct ones).

The product of its (nonzero) digits is 11289600, while the sum is 59.

The spelling of 255870089780 in words is "two hundred fifty-five billion, eight hundred seventy million, eighty-nine thousand, seven hundred eighty".