7997011008 has 112 divisors (see below), whose sum is σ = 24512991360. Its totient is φ = 2253533184.

The previous prime is 7997011003. The next prime is 7997011039. The reversal of 7997011008 is 8001107997.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (7997011003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57358 + ... + 138866.

Almost surely, 2^7997011008 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 7997011008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12256495680).

7997011008 is an abundant number, since it is smaller than the sum of its proper divisors (16515980352).

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

7997011008 is a wasteful number, since it uses less digits than its factorization.

7997011008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81604 (or 81594 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 42.

The square root of 7997011008 is about 89426.0085657411. The cubic root of 7997011008 is about 1999.7508863058.

The spelling of 7997011008 in words is "seven billion, nine hundred ninety-seven million, eleven thousand, eight".