253558999344 has 120 divisors (see below), whose sum is σ = 764784288768. Its totient is φ = 72177920640.

The previous prime is 253558999313. The next prime is 253558999361. The reversal of 253558999344 is 443999855352.

It is a super-2 number, since 2×253558999344² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 438489 + ... + 836295.

Almost surely, 2^253558999344 is an apocalyptic number.

253558999344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 253558999344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (382392144384).

253558999344 is an abundant number, since it is smaller than the sum of its proper divisors (511225289424).

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

253558999344 is a wasteful number, since it uses less digits than its factorization.

253558999344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398103 (or 398090 counting only the distinct ones).

The product of its digits is 209952000, while the sum is 66.

The spelling of 253558999344 in words is "two hundred fifty-three billion, five hundred fifty-eight million, nine hundred ninety-nine thousand, three hundred forty-four".