15979919759 has 4 divisors (see below), whose sum is σ = 16051578816. Its totient is φ = 15908260704.

The previous prime is 15979919741. The next prime is 15979919789. The reversal of 15979919759 is 95791997951.

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

It is a cyclic number.

It is not a de Polignac number, because 15979919759 - 2³² = 11684952463 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15979919692 and 15979919701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15979919719) 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, 35829194 + ... + 35829639.

It is an arithmetic number, because the mean of its divisors is an integer number (4012894704).

Almost surely, 2^15979919759 is an apocalyptic number.

15979919759 is a deficient number, since it is larger than the sum of its proper divisors (71659057).

15979919759 is an equidigital number, since it uses as much as digits as its factorization.

15979919759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71659056.

The product of its digits is 72335025, while the sum is 71.

The spelling of 15979919759 in words is "fifteen billion, nine hundred seventy-nine million, nine hundred nineteen thousand, seven hundred fifty-nine".