7977063720 has 64 divisors (see below), whose sum is σ = 24440382720. Its totient is φ = 2081955584.

The previous prime is 7977063719. The next prime is 7977063733. The reversal of 7977063720 is 273607797.

It is a happy number.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 7977063720.

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, 701547 + ... + 712826.

It is an arithmetic number, because the mean of its divisors is an integer number (381880980).

Almost surely, 2^7977063720 is an apocalyptic number.

It is an amenable number.

7977063720 is an abundant number, since it is smaller than the sum of its proper divisors (16463319000).

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

7977063720 is a wasteful number, since it uses less digits than its factorization.

7977063720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414434 (or 1414430 counting only the distinct ones).

The product of its (nonzero) digits is 777924, while the sum is 48.

The square root of 7977063720 is about 89314.4093637751. The cubic root of 7977063720 is about 1998.0868137761.

The spelling of 7977063720 in words is "seven billion, nine hundred seventy-seven million, sixty-three thousand, seven hundred twenty".