16513791415 has 24 divisors (see below), whose sum is σ = 23063125680. Its totient is φ = 11303550720.

The previous prime is 16513791403. The next prime is 16513791439. The reversal of 16513791415 is 51419731561.

It is not a de Polignac number, because 16513791415 - 2⁹ = 16513790903 is a prime.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 792525 + ... + 813094.

It is an arithmetic number, because the mean of its divisors is an integer number (960963570).

Almost surely, 2^16513791415 is an apocalyptic number.

16513791415 is a deficient number, since it is larger than the sum of its proper divisors (6549334265).

16513791415 is a wasteful number, since it uses less digits than its factorization.

16513791415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605663 (or 1605652 counting only the distinct ones).

The product of its digits is 113400, while the sum is 43.

The spelling of 16513791415 in words is "sixteen billion, five hundred thirteen million, seven hundred ninety-one thousand, four hundred fifteen".