9977888255 has 4 divisors (see below), whose sum is σ = 11973465912. Its totient is φ = 7982310600.

The previous prime is 9977888233. The next prime is 9977888281. The reversal of 9977888255 is 5528887799.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 9977888255 - 2²⁸ = 9709452799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 997788821 + ... + 997788830.

It is an arithmetic number, because the mean of its divisors is an integer number (2993366478).

Almost surely, 2^9977888255 is an apocalyptic number.

9977888255 is a deficient number, since it is larger than the sum of its proper divisors (1995577657).

9977888255 is a wasteful number, since it uses less digits than its factorization.

9977888255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995577656.

The product of its digits is 101606400, while the sum is 68.

The square root of 9977888255 is about 99889.3800911789. The cubic root of 9977888255 is about 2152.8455745023.

The spelling of 9977888255 in words is "nine billion, nine hundred seventy-seven million, eight hundred eighty-eight thousand, two hundred fifty-five".