15979551061 has 8 divisors (see below), whose sum is σ = 16178803200. Its totient is φ = 15781503360.

The previous prime is 15979551053. The next prime is 15979551097. The reversal of 15979551061 is 16015597951.

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 15979551061 - 2³ = 15979551053 is a prime.

It is a super-2 number, since 2×15979551061² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15979550996 and 15979551014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15979551011) 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, 274396 + ... + 327493.

It is an arithmetic number, because the mean of its divisors is an integer number (2022350400).

Almost surely, 2^15979551061 is an apocalyptic number.

It is an amenable number.

15979551061 is a deficient number, since it is larger than the sum of its proper divisors (199252139).

15979551061 is a wasteful number, since it uses less digits than its factorization.

15979551061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602219.

The product of its (nonzero) digits is 425250, while the sum is 49.

The spelling of 15979551061 in words is "fifteen billion, nine hundred seventy-nine million, five hundred fifty-one thousand, sixty-one".