15913461515 has 12 divisors (see below), whose sum is σ = 21825199344. Its totient is φ = 10911576144.

The previous prime is 15913461511. The next prime is 15913461611. The reversal of 15913461515 is 51516431951.

It is not a de Polignac number, because 15913461515 - 2² = 15913461511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15913461511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 735644 + ... + 756966.

It is an arithmetic number, because the mean of its divisors is an integer number (1818766612).

Almost surely, 2^15913461515 is an apocalyptic number.

15913461515 is a deficient number, since it is larger than the sum of its proper divisors (5911737829).

15913461515 is an frugal number, since it uses more digits than its factorization.

15913461515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42658 (or 21335 counting only the distinct ones).

The product of its digits is 81000, while the sum is 41.

The spelling of 15913461515 in words is "fifteen billion, nine hundred thirteen million, four hundred sixty-one thousand, five hundred fifteen".