7901980992 has 84 divisors (see below), whose sum is σ = 23021009076. Its totient is φ = 2590801920.

The previous prime is 7901980981. The next prime is 7901981011. The reversal of 7901980992 is 2990891097.

It can be written as a sum of positive squares in 2 ways, for example, as 378847296 + 7523133696 = 19464^2 + 86736^2 .

It is a congruent number.

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, 77313 + ... + 147584.

Almost surely, 2^7901980992 is an apocalyptic number.

7901980992 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

7901980992 is an abundant number, since it is smaller than the sum of its proper divisors (15119028084).

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

7901980992 is a wasteful number, since it uses less digits than its factorization.

7901980992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224976 (or 224963 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 54.

The square root of 7901980992 is about 88893.0874252886. The cubic root of 7901980992 is about 1991.7981602237.

The spelling of 7901980992 in words is "seven billion, nine hundred one million, nine hundred eighty thousand, nine hundred ninety-two".