15238209713 has 2 divisors, whose sum is σ = 15238209714. Its totient is φ = 15238209712.

The previous prime is 15238209689. The next prime is 15238209733. The reversal of 15238209713 is 31790283251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9217536064 + 6020673649 = 96008^2 + 77593^2 .

It is a cyclic number.

It is not a de Polignac number, because 15238209713 - 2⁸ = 15238209457 is a prime.

It is not a weakly prime, because it can be changed into another prime (15238209733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7619104856 + 7619104857.

It is an arithmetic number, because the mean of its divisors is an integer number (7619104857).

Almost surely, 2^15238209713 is an apocalyptic number.

It is an amenable number.

15238209713 is a deficient number, since it is larger than the sum of its proper divisors (1).

15238209713 is an equidigital number, since it uses as much as digits as its factorization.

15238209713 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 15238209713 in words is "fifteen billion, two hundred thirty-eight million, two hundred nine thousand, seven hundred thirteen".