17920136072 has 32 divisors (see below), whose sum is σ = 33693429600. Its totient is φ = 8935257984.

The previous prime is 17920136071. The next prime is 17920136089. The reversal of 17920136072 is 27063102971.

It is a super-2 number, since 2×17920136072² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (17920136071) 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, 8133323 + ... + 8135525.

It is an arithmetic number, because the mean of its divisors is an integer number (1052919675).

Almost surely, 2^17920136072 is an apocalyptic number.

It is an amenable number.

17920136072 is a deficient number, since it is larger than the sum of its proper divisors (15773293528).

17920136072 is a wasteful number, since it uses less digits than its factorization.

17920136072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4565 (or 4561 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 38.

The spelling of 17920136072 in words is "seventeen billion, nine hundred twenty million, one hundred thirty-six thousand, seventy-two".