5624136721 has 32 divisors (see below), whose sum is σ = 6716736000. Its totient is φ = 4607511552.

The previous prime is 5624136719. The next prime is 5624136731. The reversal of 5624136721 is 1276314265.

It is not a de Polignac number, because 5624136721 - 2¹ = 5624136719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5624136731) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15665940 + ... + 15666298.

It is an arithmetic number, because the mean of its divisors is an integer number (209898000).

Almost surely, 2^5624136721 is an apocalyptic number.

It is an amenable number.

5624136721 is a deficient number, since it is larger than the sum of its proper divisors (1092599279).

5624136721 is a wasteful number, since it uses less digits than its factorization.

5624136721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961.

The product of its digits is 60480, while the sum is 37.

The square root of 5624136721 is about 74994.2445858347. The cubic root of 5624136721 is about 1778.3556671075.

The spelling of 5624136721 in words is "five billion, six hundred twenty-four million, one hundred thirty-six thousand, seven hundred twenty-one".