8001617992 has 16 divisors (see below), whose sum is σ = 15005772540. Its totient is φ = 4000078656.

The previous prime is 8001617963. The next prime is 8001617993. The reversal of 8001617992 is 2997161008.

It can be written as a sum of positive squares in 2 ways, for example, as 6600912516 + 1400705476 = 81246^2 + 37426^2 .

It is a super-2 number, since 2×8001617992² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8001617993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43243 + ... + 133690.

Almost surely, 2^8001617992 is an apocalyptic number.

It is an amenable number.

8001617992 is a deficient number, since it is larger than the sum of its proper divisors (7004154548).

8001617992 is a wasteful number, since it uses less digits than its factorization.

8001617992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182592 (or 182588 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 43.

The square root of 8001617992 is about 89451.7634929575. The cubic root of 8001617992 is about 2000.1348235778.

The spelling of 8001617992 in words is "eight billion, one million, six hundred seventeen thousand, nine hundred ninety-two".