52736631391 has 4 divisors (see below), whose sum is σ = 55029528432. Its totient is φ = 50443734352.

The previous prime is 52736631377. The next prime is 52736631407. The reversal of 52736631391 is 19313663725.

52736631391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52736631391 - 2⁵ = 52736631359 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 (52736631301) 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, 1146448486 + ... + 1146448531.

It is an arithmetic number, because the mean of its divisors is an integer number (13757382108).

Almost surely, 2^52736631391 is an apocalyptic number.

52736631391 is a deficient number, since it is larger than the sum of its proper divisors (2292897041).

52736631391 is a wasteful number, since it uses less digits than its factorization.

52736631391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2292897040.

The product of its digits is 612360, while the sum is 46.

The spelling of 52736631391 in words is "fifty-two billion, seven hundred thirty-six million, six hundred thirty-one thousand, three hundred ninety-one".