7999999999902 has 48 divisors (see below), whose sum is σ = 17622331132848. Its totient is φ = 2622229511040.

The previous prime is 7999999999837. The next prime is 7999999999907. The reversal of 7999999999902 is 2099999999997.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 7999999999794 and 7999999999803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7999999999907) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3000018 + ... + 5000010.

It is an arithmetic number, because the mean of its divisors is an integer number (367131898601).

Almost surely, 2^{7999999999902} is an apocalyptic number.

7999999999902 is an abundant number, since it is smaller than the sum of its proper divisors (9622331132946).

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

7999999999902 is a wasteful number, since it uses less digits than its factorization.

7999999999902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2003705 (or 2003702 counting only the distinct ones).

The product of its (nonzero) digits is 48814981614, while the sum is 99.

The spelling of 7999999999902 in words is "seven trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred two".