5071923621 has 20 divisors (see below), whose sum is σ = 7615857612. Its totient is φ = 3363752448.

The previous prime is 5071923611. The next prime is 5071923673. The reversal of 5071923621 is 1263291705.

5071923621 is a `hidden beast` number, since 5 + 0 + 7 + 1 + 9 + 23 + 621 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3577714596 + 1494209025 = 59814^2 + 38655^2 .

It is not a de Polignac number, because 5071923621 - 2²⁷ = 4937705893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5071923611) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 146586 + ... + 177851.

Almost surely, 2^5071923621 is an apocalyptic number.

It is an amenable number.

5071923621 is a deficient number, since it is larger than the sum of its proper divisors (2543933991).

5071923621 is a wasteful number, since it uses less digits than its factorization.

5071923621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324642 (or 324633 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 5071923621 is about 71217.4390230370. The cubic root of 5071923621 is about 1718.1361210343.

The spelling of 5071923621 in words is "five billion, seventy-one million, nine hundred twenty-three thousand, six hundred twenty-one".