52991819567 has 12 divisors (see below), whose sum is σ = 55498865760. Its totient is φ = 50589561792.

The previous prime is 52991819563. The next prime is 52991819599. The reversal of 52991819567 is 76591819925.

It is not a de Polignac number, because 52991819567 - 2² = 52991819563 is a prime.

It is a hoax number, since the sum of its digits (62) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52991819561) 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 11 ways as a sum of consecutive naturals, for example, 279143 + ... + 428840.

It is an arithmetic number, because the mean of its divisors is an integer number (4624905480).

Almost surely, 2^52991819567 is an apocalyptic number.

52991819567 is a deficient number, since it is larger than the sum of its proper divisors (2507046193).

52991819567 is an equidigital number, since it uses as much as digits as its factorization.

52991819567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708130 (or 708101 counting only the distinct ones).

The product of its digits is 12247200, while the sum is 62.

The spelling of 52991819567 in words is "fifty-two billion, nine hundred ninety-one million, eight hundred nineteen thousand, five hundred sixty-seven".