253312665564 has 72 divisors (see below), whose sum is σ = 723750504960. Its totient is φ = 68565831264.

The previous prime is 253312665547. The next prime is 253312665569. The reversal of 253312665564 is 465566213352.

It is a happy number.

It is a super-2 number, since 2×253312665564² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253312665569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11325772 + ... + 11348115.

Almost surely, 2^253312665564 is an apocalyptic number.

It is an amenable number.

253312665564 is an abundant number, since it is smaller than the sum of its proper divisors (470437839396).

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

253312665564 is a wasteful number, since it uses less digits than its factorization.

253312665564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22673927 (or 22673918 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 48.

The spelling of 253312665564 in words is "two hundred fifty-three billion, three hundred twelve million, six hundred sixty-five thousand, five hundred sixty-four".