255665853420 has 48 divisors (see below), whose sum is σ = 726548944128. Its totient is φ = 67159984320.

The previous prime is 255665853409. The next prime is 255665853451. The reversal of 255665853420 is 24358566552.

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, 31795216 + ... + 31803255.

It is an arithmetic number, because the mean of its divisors is an integer number (15136436336).

Almost surely, 2^255665853420 is an apocalyptic number.

255665853420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255665853420 is an abundant number, since it is smaller than the sum of its proper divisors (470883090708).

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

255665853420 is a wasteful number, since it uses less digits than its factorization.

255665853420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63598550 (or 63598548 counting only the distinct ones).

The product of its (nonzero) digits is 8640000, while the sum is 51.

The spelling of 255665853420 in words is "two hundred fifty-five billion, six hundred sixty-five million, eight hundred fifty-three thousand, four hundred twenty".