7990371664 has 40 divisors (see below), whose sum is σ = 16898480928. Its totient is φ = 3629892480.

The previous prime is 7990371661. The next prime is 7990371677. The reversal of 7990371664 is 4661730997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7990371661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316434 + ... + 340750.

Almost surely, 2^7990371664 is an apocalyptic number.

It is an amenable number.

7990371664 is an abundant number, since it is smaller than the sum of its proper divisors (8908109264).

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

7990371664 is a wasteful number, since it uses less digits than its factorization.

7990371664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26203 (or 26197 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 52.

The square root of 7990371664 is about 89388.8788608516. The cubic root of 7990371664 is about 1999.1973165594.

The spelling of 7990371664 in words is "seven billion, nine hundred ninety million, three hundred seventy-one thousand, six hundred sixty-four".