15217902239 has 2 divisors, whose sum is σ = 15217902240. Its totient is φ = 15217902238.

The previous prime is 15217902233. The next prime is 15217902241. The reversal of 15217902239 is 93220971251.

It is a strong prime.

It is an emirp because it is prime and its reverse (93220971251) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15217902239 - 2¹⁶ = 15217836703 is a prime.

It is a super-2 number, since 2×15217902239² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 15217902241, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 15217902196 and 15217902205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15217902233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7608951119 + 7608951120.

It is an arithmetic number, because the mean of its divisors is an integer number (7608951120).

Almost surely, 2^15217902239 is an apocalyptic number.

15217902239 is a deficient number, since it is larger than the sum of its proper divisors (1).

15217902239 is an equidigital number, since it uses as much as digits as its factorization.

15217902239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 41.

The spelling of 15217902239 in words is "fifteen billion, two hundred seventeen million, nine hundred two thousand, two hundred thirty-nine".