5715999621 has 12 divisors (see below), whose sum is σ = 8262826572. Its totient is φ = 3807720576.

The previous prime is 5715999593. The next prime is 5715999643. The reversal of 5715999621 is 1269995175.

5715999621 is a `hidden beast` number, since 5 + 7 + 1 + 5 + 9 + 9 + 9 + 621 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4755619521 + 960380100 = 68961^2 + 30990^2 .

It is not a de Polignac number, because 5715999621 - 2⁷ = 5715999493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5715999671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 233166 + ... + 256511.

It is an arithmetic number, because the mean of its divisors is an integer number (688568881).

Almost surely, 2^5715999621 is an apocalyptic number.

It is an amenable number.

5715999621 is a deficient number, since it is larger than the sum of its proper divisors (2546826951).

5715999621 is a wasteful number, since it uses less digits than its factorization.

5715999621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490980 (or 490977 counting only the distinct ones).

The product of its digits is 1530900, while the sum is 54.

The square root of 5715999621 is about 75604.2301792697. The cubic root of 5715999621 is about 1787.9857935075.

The spelling of 5715999621 in words is "five billion, seven hundred fifteen million, nine hundred ninety-nine thousand, six hundred twenty-one".