5621656039 has 2 divisors, whose sum is σ = 5621656040. Its totient is φ = 5621656038.

The previous prime is 5621656009. The next prime is 5621656043. The reversal of 5621656039 is 9306561265.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5621656039 - 2⁷ = 5621655911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5621655986 and 5621656004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5621656009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2810828019 + 2810828020.

It is an arithmetic number, because the mean of its divisors is an integer number (2810828020).

Almost surely, 2^5621656039 is an apocalyptic number.

5621656039 is a deficient number, since it is larger than the sum of its proper divisors (1).

5621656039 is an equidigital number, since it uses as much as digits as its factorization.

5621656039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 291600, while the sum is 43.

The square root of 5621656039 is about 74977.7036124740. The cubic root of 5621656039 is about 1778.0941642387.

The spelling of 5621656039 in words is "five billion, six hundred twenty-one million, six hundred fifty-six thousand, thirty-nine".