15202042979 has 2 divisors, whose sum is σ = 15202042980. Its totient is φ = 15202042978.

The previous prime is 15202042939. The next prime is 15202043009. The reversal of 15202042979 is 97924020251.

It is a strong prime.

It is an emirp because it is prime and its reverse (97924020251) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15202042979 - 2¹² = 15202038883 is a prime.

It is a super-2 number, since 2×15202042979² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15202042909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7601021489 + 7601021490.

It is an arithmetic number, because the mean of its divisors is an integer number (7601021490).

Almost surely, 2^15202042979 is an apocalyptic number.

15202042979 is a deficient number, since it is larger than the sum of its proper divisors (1).

15202042979 is an equidigital number, since it uses as much as digits as its factorization.

15202042979 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 15202042979 in words is "fifteen billion, two hundred two million, forty-two thousand, nine hundred seventy-nine".