16572973966 has 16 divisors (see below), whose sum is σ = 25527965184. Its totient is φ = 8066114784.

The previous prime is 16572973961. The next prime is 16572973973. The reversal of 16572973966 is 66937927561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16572973961) 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, 602085 + ... + 629008.

It is an arithmetic number, because the mean of its divisors is an integer number (1595497824).

Almost surely, 2^16572973966 is an apocalyptic number.

16572973966 is a deficient number, since it is larger than the sum of its proper divisors (8954991218).

16572973966 is a wasteful number, since it uses less digits than its factorization.

16572973966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231275.

The product of its digits is 25719120, while the sum is 61.

The spelling of 16572973966 in words is "sixteen billion, five hundred seventy-two million, nine hundred seventy-three thousand, nine hundred sixty-six".