15955798519 has 2 divisors, whose sum is σ = 15955798520. Its totient is φ = 15955798518.

The previous prime is 15955798501. The next prime is 15955798561. The reversal of 15955798519 is 91589755951.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15955798519 - 2³³ = 7365863927 is a prime.

It is a super-2 number, since 2×15955798519² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15955798219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7977899259 + 7977899260.

It is an arithmetic number, because the mean of its divisors is an integer number (7977899260).

Almost surely, 2^15955798519 is an apocalyptic number.

15955798519 is a deficient number, since it is larger than the sum of its proper divisors (1).

15955798519 is an equidigital number, since it uses as much as digits as its factorization.

15955798519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25515000, while the sum is 64.

The spelling of 15955798519 in words is "fifteen billion, nine hundred fifty-five million, seven hundred ninety-eight thousand, five hundred nineteen".