15557130079 has 2 divisors, whose sum is σ = 15557130080. Its totient is φ = 15557130078.

The previous prime is 15557130047. The next prime is 15557130109. The reversal of 15557130079 is 97003175551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15557130079 - 2⁵ = 15557130047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15557130019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7778565039 + 7778565040.

It is an arithmetic number, because the mean of its divisors is an integer number (7778565040).

Almost surely, 2^15557130079 is an apocalyptic number.

15557130079 is a deficient number, since it is larger than the sum of its proper divisors (1).

15557130079 is an equidigital number, since it uses as much as digits as its factorization.

15557130079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165375, while the sum is 43.

The spelling of 15557130079 in words is "fifteen billion, five hundred fifty-seven million, one hundred thirty thousand, seventy-nine".