253305302656 has 64 divisors (see below), whose sum is σ = 590134121280. Its totient is φ = 106034761728.

The previous prime is 253305302629. The next prime is 253305302659. The reversal of 253305302656 is 656203503352.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (253305302659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3248761 + ... + 3325816.

It is an arithmetic number, because the mean of its divisors is an integer number (9220845645).

Almost surely, 2^253305302656 is an apocalyptic number.

It is an amenable number.

253305302656 is an abundant number, since it is smaller than the sum of its proper divisors (336828818624).

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

253305302656 is an equidigital number, since it uses as much as digits as its factorization.

253305302656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6574641 (or 6574629 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 40.

The spelling of 253305302656 in words is "two hundred fifty-three billion, three hundred five million, three hundred two thousand, six hundred fifty-six".