52561613613 has 48 divisors (see below), whose sum is σ = 74015398400. Its totient is φ = 33143575680.

The previous prime is 52561613593. The next prime is 52561613633. The reversal of 52561613613 is 31631616525.

It is an interprime number because it is at equal distance from previous prime (52561613593) and next prime (52561613633).

It is not a de Polignac number, because 52561613613 - 2⁶ = 52561613549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52561613633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 74134503 + ... + 74135211.

Almost surely, 2^52561613613 is an apocalyptic number.

It is an amenable number.

52561613613 is a deficient number, since it is larger than the sum of its proper divisors (21453784787).

52561613613 is a wasteful number, since it uses less digits than its factorization.

52561613613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090 (or 1031 counting only the distinct ones).

The product of its digits is 97200, while the sum is 39.

The spelling of 52561613613 in words is "fifty-two billion, five hundred sixty-one million, six hundred thirteen thousand, six hundred thirteen".