52620995689 has 4 divisors (see below), whose sum is σ = 52621622656. Its totient is φ = 52620368724.

The previous prime is 52620995681. The next prime is 52620995719. The reversal of 52620995689 is 98659902625.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52620995689 - 2³ = 52620995681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52620995681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163749 + ... + 363394.

It is an arithmetic number, because the mean of its divisors is an integer number (13155405664).

Almost surely, 2^52620995689 is an apocalyptic number.

It is an amenable number.

52620995689 is a deficient number, since it is larger than the sum of its proper divisors (626967).

52620995689 is an equidigital number, since it uses as much as digits as its factorization.

52620995689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626966.

The product of its (nonzero) digits is 20995200, while the sum is 61.

The spelling of 52620995689 in words is "fifty-two billion, six hundred twenty million, nine hundred ninety-five thousand, six hundred eighty-nine".