16513357879 has 4 divisors (see below), whose sum is σ = 16576146576. Its totient is φ = 16450569184.

The previous prime is 16513357873. The next prime is 16513357937. The reversal of 16513357879 is 97875331561.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16513357879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16513357873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31393954 + ... + 31394479.

It is an arithmetic number, because the mean of its divisors is an integer number (4144036644).

Almost surely, 2^16513357879 is an apocalyptic number.

16513357879 is a deficient number, since it is larger than the sum of its proper divisors (62788697).

16513357879 is an equidigital number, since it uses as much as digits as its factorization.

16513357879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62788696.

The product of its digits is 4762800, while the sum is 55.

The spelling of 16513357879 in words is "sixteen billion, five hundred thirteen million, three hundred fifty-seven thousand, eight hundred seventy-nine".