15620138339 has 32 divisors (see below), whose sum is σ = 18026136576. Its totient is φ = 13407713280.

The previous prime is 15620138321. The next prime is 15620138363. The reversal of 15620138339 is 93383102651.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-15620138339 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15620138296 and 15620138305.

It is not an unprimeable number, because it can be changed into a prime (15620138309) 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, 6625949 + ... + 6628305.

It is an arithmetic number, because the mean of its divisors is an integer number (563316768).

Almost surely, 2^15620138339 is an apocalyptic number.

15620138339 is a deficient number, since it is larger than the sum of its proper divisors (2405998237).

15620138339 is a wasteful number, since it uses less digits than its factorization.

15620138339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2735.

The product of its (nonzero) digits is 116640, while the sum is 41.

The spelling of 15620138339 in words is "fifteen billion, six hundred twenty million, one hundred thirty-eight thousand, three hundred thirty-nine".