7980957864 has 288 divisors, whose sum is σ = 25592898240. Its totient is φ = 2309472000.

The previous prime is 7980957851. The next prime is 7980957871. The reversal of 7980957864 is 4687590897.

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 71 ways as a sum of consecutive naturals, for example, 13279164 + ... + 13279764.

It is an arithmetic number, because the mean of its divisors is an integer number (88864230).

Almost surely, 2^7980957864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7980957864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12796449120).

7980957864 is an abundant number, since it is smaller than the sum of its proper divisors (17611940376).

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

7980957864 is a wasteful number, since it uses less digits than its factorization.

7980957864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665 (or 640 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 63.

The square root of 7980957864 is about 89336.2069040319. The cubic root of 7980957864 is about 1998.4118946278.

The spelling of 7980957864 in words is "seven billion, nine hundred eighty million, nine hundred fifty-seven thousand, eight hundred sixty-four".