996877778699 has 4 divisors (see below), whose sum is σ = 1087503031320. Its totient is φ = 906252526080.

The previous prime is 996877778657. The next prime is 996877778711.

996877778699 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 996877778699 - 2³² = 992582811403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (996877778629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45312626294 + ... + 45312626315.

It is an arithmetic number, because the mean of its divisors is an integer number (271875757830).

Almost surely, 2^996877778699 is an apocalyptic number.

996877778699 is a deficient number, since it is larger than the sum of its proper divisors (90625252621).

996877778699 is a wasteful number, since it uses less digits than its factorization.

996877778699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90625252620.

The product of its digits is 36294822144, while the sum is 92.

The spelling of 996877778699 in words is "nine hundred ninety-six billion, eight hundred seventy-seven million, seven hundred seventy-eight thousand, six hundred ninety-nine".