253321330520 has 32 divisors (see below), whose sum is σ = 569991312720. Its totient is φ = 101325275520.

The previous prime is 253321330511. The next prime is 253321330531. The reversal of 253321330520 is 25033123352.

It is a congruent number.

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, 1450715 + ... + 1615925.

Almost surely, 2^253321330520 is an apocalyptic number.

253321330520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253321330520 is an abundant number, since it is smaller than the sum of its proper divisors (316669982200).

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

253321330520 is a wasteful number, since it uses less digits than its factorization.

253321330520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203555 (or 203551 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 29.

Adding to 253321330520 its reverse (25033123352), we get a palindrome (278354453872).

The spelling of 253321330520 in words is "two hundred fifty-three billion, three hundred twenty-one million, three hundred thirty thousand, five hundred twenty".