7998788480 has 64 divisors (see below), whose sum is σ = 19435675680. Its totient is φ = 3147048960.

The previous prime is 7998788449. The next prime is 7998788543. The reversal of 7998788480 is 848878997.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 7998788480.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63404 + ... + 141483.

Almost surely, 2^7998788480 is an apocalyptic number.

It is an amenable number.

7998788480 is an abundant number, since it is smaller than the sum of its proper divisors (11436887200).

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

7998788480 is a wasteful number, since it uses less digits than its factorization.

7998788480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204967 (or 204955 counting only the distinct ones).

The product of its (nonzero) digits is 65028096, while the sum is 68.

The square root of 7998788480 is about 89435.9462408712. The cubic root of 7998788480 is about 1999.8990349031.

The spelling of 7998788480 in words is "seven billion, nine hundred ninety-eight million, seven hundred eighty-eight thousand, four hundred eighty".