17208979972 has 12 divisors (see below), whose sum is σ = 31700752720. Its totient is φ = 8151622056.

The previous prime is 17208979969. The next prime is 17208979973. The reversal of 17208979972 is 27997980271.

It is a super-2 number, since 2×17208979972² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 17208979972.

It is not an unprimeable number, because it can be changed into a prime (17208979973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113216898 + ... + 113217049.

Almost surely, 2^17208979972 is an apocalyptic number.

It is an amenable number.

17208979972 is a deficient number, since it is larger than the sum of its proper divisors (14491772748).

17208979972 is a wasteful number, since it uses less digits than its factorization.

17208979972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226433970 (or 226433968 counting only the distinct ones).

The product of its (nonzero) digits is 8001504, while the sum is 61.

The spelling of 17208979972 in words is "seventeen billion, two hundred eight million, nine hundred seventy-nine thousand, nine hundred seventy-two".