253387018668 has 48 divisors (see below), whose sum is σ = 676045843200. Its totient is φ = 72359098944.

The previous prime is 253387018657. The next prime is 253387018693. The reversal of 253387018668 is 866810783352.

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, 610146 + ... + 937577.

It is an arithmetic number, because the mean of its divisors is an integer number (14084288400).

Almost surely, 2^253387018668 is an apocalyptic number.

253387018668 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

253387018668 is an abundant number, since it is smaller than the sum of its proper divisors (422658824532).

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

253387018668 is a wasteful number, since it uses less digits than its factorization.

253387018668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549686 (or 1549684 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 57.

The spelling of 253387018668 in words is "two hundred fifty-three billion, three hundred eighty-seven million, eighteen thousand, six hundred sixty-eight".