7990877755 has 16 divisors (see below), whose sum is σ = 10974585024. Its totient is φ = 5471625600.

The previous prime is 7990877749. The next prime is 7990877771. The reversal of 7990877755 is 5577780997.

It is not a de Polignac number, because 7990877755 - 2⁵ = 7990877723 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138312 + ... + 187381.

It is an arithmetic number, because the mean of its divisors is an integer number (685911564).

Almost surely, 2^7990877755 is an apocalyptic number.

7990877755 is a deficient number, since it is larger than the sum of its proper divisors (2983707269).

7990877755 is a wasteful number, since it uses less digits than its factorization.

7990877755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326406.

The product of its (nonzero) digits is 38896200, while the sum is 64.

The square root of 7990877755 is about 89391.7096547549. The cubic root of 7990877755 is about 1999.2395237913.

The spelling of 7990877755 in words is "seven billion, nine hundred ninety million, eight hundred seventy-seven thousand, seven hundred fifty-five".