15966664292 has 12 divisors (see below), whose sum is σ = 28019496960. Its totient is φ = 7961093736.

The previous prime is 15966664289. The next prime is 15966664313. The reversal of 15966664292 is 29246666951.

It is a happy number.

It is a super-2 number, since 2×15966664292² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5557988 + ... + 5560859.

It is an arithmetic number, because the mean of its divisors is an integer number (2334958080).

Almost surely, 2^15966664292 is an apocalyptic number.

It is an amenable number.

15966664292 is a deficient number, since it is larger than the sum of its proper divisors (12052832668).

15966664292 is a wasteful number, since it uses less digits than its factorization.

15966664292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11119210 (or 11119208 counting only the distinct ones).

The product of its digits is 8398080, while the sum is 56.

The spelling of 15966664292 in words is "fifteen billion, nine hundred sixty-six million, six hundred sixty-four thousand, two hundred ninety-two".