7997920002 has 24 divisors (see below), whose sum is σ = 18240870960. Its totient is φ = 2525658840.

The previous prime is 7997919997. The next prime is 7997920013. The reversal of 7997920002 is 2000297997.

7997920002 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 7997920002.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11692524 + ... + 11693207.

It is an arithmetic number, because the mean of its divisors is an integer number (760036290).

Almost surely, 2^7997920002 is an apocalyptic number.

7997920002 is an abundant number, since it is smaller than the sum of its proper divisors (10242950958).

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

7997920002 is a wasteful number, since it uses less digits than its factorization.

7997920002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23385758 (or 23385755 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 45.

The square root of 7997920002 is about 89431.0908018011. The cubic root of 7997920002 is about 1999.8266518090.

The spelling of 7997920002 in words is "seven billion, nine hundred ninety-seven million, nine hundred twenty thousand, two".