16785290972 has 24 divisors (see below), whose sum is σ = 30081097200. Its totient is φ = 8190999936.

The previous prime is 16785290947. The next prime is 16785290983. The reversal of 16785290972 is 27909258761.

It is a super-3 number, since 3×16785290972³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183854 + ... + 259562.

It is an arithmetic number, because the mean of its divisors is an integer number (1253379050).

Almost surely, 2^16785290972 is an apocalyptic number.

It is an amenable number.

16785290972 is a deficient number, since it is larger than the sum of its proper divisors (13295806228).

16785290972 is a wasteful number, since it uses less digits than its factorization.

16785290972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77045 (or 77043 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 56.

The spelling of 16785290972 in words is "sixteen billion, seven hundred eighty-five million, two hundred ninety thousand, nine hundred seventy-two".