253443256320 has 104 divisors (see below), whose sum is σ = 810919615536. Its totient is φ = 67584851968.

The previous prime is 253443256309. The next prime is 253443256369. The reversal of 253443256320 is 23652344352.

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, 2001087 + ... + 2123966.

Almost surely, 2^253443256320 is an apocalyptic number.

253443256320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253443256320 is an abundant number, since it is smaller than the sum of its proper divisors (557476359216).

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

253443256320 is an equidigital number, since it uses as much as digits as its factorization.

253443256320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4125085 (or 4125063 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 39.

The spelling of 253443256320 in words is "two hundred fifty-three billion, four hundred forty-three million, two hundred fifty-six thousand, three hundred twenty".