877777788798 has 16 divisors (see below), whose sum is σ = 1950617308560. Its totient is φ = 292592596248.

The previous prime is 877777788793. The next prime is 877777788817. The reversal of 877777788798 is 897887777778.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (877777788793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8127572065 + ... + 8127572172.

It is an arithmetic number, because the mean of its divisors is an integer number (121913581785).

Almost surely, 2^877777788798 is an apocalyptic number.

877777788798 is an abundant number, since it is smaller than the sum of its proper divisors (1072839519762).

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

877777788798 is a wasteful number, since it uses less digits than its factorization.

877777788798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16255144248 (or 16255144242 counting only the distinct ones).

The product of its digits is 30359089152, while the sum is 90.

The spelling of 877777788798 in words is "eight hundred seventy-seven billion, seven hundred seventy-seven million, seven hundred eighty-eight thousand, seven hundred ninety-eight".