15956646422 has 8 divisors (see below), whose sum is σ = 23936207016. Its totient is φ = 7977910752.

The previous prime is 15956646401. The next prime is 15956646457. The reversal of 15956646422 is 22464665951.

It is a happy number.

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

It is a super-2 number, since 2×15956646422² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155363 + ... + 236750.

It is an arithmetic number, because the mean of its divisors is an integer number (2992025877).

Almost surely, 2^15956646422 is an apocalyptic number.

15956646422 is a deficient number, since it is larger than the sum of its proper divisors (7979560594).

15956646422 is a wasteful number, since it uses less digits than its factorization.

15956646422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412462.

The product of its digits is 3110400, while the sum is 50.

The spelling of 15956646422 in words is "fifteen billion, nine hundred fifty-six million, six hundred forty-six thousand, four hundred twenty-two".