17072912972 has 24 divisors (see below), whose sum is σ = 31189675776. Its totient is φ = 8161887888.

The previous prime is 17072912953. The next prime is 17072912981. The reversal of 17072912972 is 27921927071.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

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 7 ways as a sum of consecutive naturals, for example, 189353 + ... + 264575.

It is an arithmetic number, because the mean of its divisors is an integer number (1299569824).

Almost surely, 2^17072912972 is an apocalyptic number.

It is an amenable number.

17072912972 is a deficient number, since it is larger than the sum of its proper divisors (14116762804).

17072912972 is a wasteful number, since it uses less digits than its factorization.

17072912972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77717 (or 77715 counting only the distinct ones).

The product of its (nonzero) digits is 222264, while the sum is 47.

The spelling of 17072912972 in words is "seventeen billion, seventy-two million, nine hundred twelve thousand, nine hundred seventy-two".