17973091968 has 512 divisors, whose sum is σ = 57679776000. Its totient is φ = 4904976384.

The previous prime is 17973091931. The next prime is 17973091973. The reversal of 17973091968 is 86919037971.

It is a super-2 number, since 2×17973091968² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 164890698 + ... + 164890806.

Almost surely, 2^17973091968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 17973091968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28839888000).

17973091968 is an abundant number, since it is smaller than the sum of its proper divisors (39706684032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

17973091968 is a wasteful number, since it uses less digits than its factorization.

17973091968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 5143824, while the sum is 60.

The spelling of 17973091968 in words is "seventeen billion, nine hundred seventy-three million, ninety-one thousand, nine hundred sixty-eight".