7997798680 has 64 divisors (see below), whose sum is σ = 18173988000. Its totient is φ = 3167437824.

The previous prime is 7997798659. The next prime is 7997798707. The reversal of 7997798680 is 868977997.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2272282 + ... + 2275798.

Almost surely, 2^7997798680 is an apocalyptic number.

It is an amenable number.

7997798680 is an abundant number, since it is smaller than the sum of its proper divisors (10176189320).

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

7997798680 is a wasteful number, since it uses less digits than its factorization.

7997798680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4076 (or 4072 counting only the distinct ones).

The product of its (nonzero) digits is 96018048, while the sum is 70.

The square root of 7997798680 is about 89430.4125004464. The cubic root of 7997798680 is about 1999.8165398384.

The spelling of 7997798680 in words is "seven billion, nine hundred ninety-seven million, seven hundred ninety-eight thousand, six hundred eighty".