877499994778 has 16 divisors (see below), whose sum is σ = 1498339912896. Its totient is φ = 381521736640.

The previous prime is 877499994757. The next prime is 877499994797.

It is a happy number.

877499994778 is nontrivially palindromic in base 10.

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 7 ways as a sum of consecutive naturals, for example, 867094351 + ... + 867095362.

It is an arithmetic number, because the mean of its divisors is an integer number (93646244556).

Almost surely, 2^877499994778 is an apocalyptic number.

877499994778 is a deficient number, since it is larger than the sum of its proper divisors (620839918118).

877499994778 is a wasteful number, since it uses less digits than its factorization.

877499994778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1734189749.

The product of its digits is 16131032064, while the sum is 88.

The spelling of 877499994778 in words is "eight hundred seventy-seven billion, four hundred ninety-nine million, nine hundred ninety-four thousand, seven hundred seventy-eight".