7899320144 has 40 divisors (see below), whose sum is σ = 15455736960. Its totient is φ = 3910814208.

The previous prime is 7899320131. The next prime is 7899320161. The reversal of 7899320144 is 4410239987.

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 7 ways as a sum of consecutive naturals, for example, 2853449 + ... + 2856215.

It is an arithmetic number, because the mean of its divisors is an integer number (386393424).

Almost surely, 2^7899320144 is an apocalyptic number.

It is an amenable number.

7899320144 is a deficient number, since it is larger than the sum of its proper divisors (7556416816).

7899320144 is a wasteful number, since it uses less digits than its factorization.

7899320144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4467 (or 4461 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 7899320144 is about 88878.1196020708. The cubic root of 7899320144 is about 1991.5745678889.

The spelling of 7899320144 in words is "seven billion, eight hundred ninety-nine million, three hundred twenty thousand, one hundred forty-four".