15964799161 has 8 divisors (see below), whose sum is σ = 16905558600. Its totient is φ = 15024223488.

The previous prime is 15964799143. The next prime is 15964799173. The reversal of 15964799161 is 16199746951.

It can be written as a sum of positive squares in 4 ways, for example, as 3465559161 + 12499240000 = 58869^2 + 111800^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15964799161 - 2¹¹ = 15964797113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15964799096 and 15964799105.

It is not an unprimeable number, because it can be changed into a prime (15964799111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159115 + ... + 239263.

It is an arithmetic number, because the mean of its divisors is an integer number (2113194825).

Almost surely, 2^15964799161 is an apocalyptic number.

It is an amenable number.

15964799161 is a deficient number, since it is larger than the sum of its proper divisors (940759439).

15964799161 is a wasteful number, since it uses less digits than its factorization.

15964799161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91883.

The product of its digits is 3674160, while the sum is 58.

The spelling of 15964799161 in words is "fifteen billion, nine hundred sixty-four million, seven hundred ninety-nine thousand, one hundred sixty-one".