16317959972 has 6 divisors (see below), whose sum is σ = 28556429958. Its totient is φ = 8158979984.

The previous prime is 16317959971. The next prime is 16317960011. The reversal of 16317959972 is 27995971361.

It can be written as a sum of positive squares in only one way, i.e., 13496862976 + 2821096996 = 116176^2 + 53114^2 .

It is not an unprimeable number, because it can be changed into a prime (16317959971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2039744993 + ... + 2039745000.

It is an arithmetic number, because the mean of its divisors is an integer number (4759404993).

Almost surely, 2^16317959972 is an apocalyptic number.

It is an amenable number.

16317959972 is a deficient number, since it is larger than the sum of its proper divisors (12238469986).

16317959972 is a wasteful number, since it uses less digits than its factorization.

16317959972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4079489997 (or 4079489995 counting only the distinct ones).

The product of its digits is 6429780, while the sum is 59.

The spelling of 16317959972 in words is "sixteen billion, three hundred seventeen million, nine hundred fifty-nine thousand, nine hundred seventy-two".