877877778778 has 32 divisors (see below), whose sum is σ = 1768033572480. Its totient is φ = 315720279360.

The previous prime is 877877778751. The next prime is 877877778779.

877877778778 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (877877778779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219248193 + ... + 219252196.

It is an arithmetic number, because the mean of its divisors is an integer number (55251049140).

Almost surely, 2^877877778778 is an apocalyptic number.

877877778778 is an abundant number, since it is smaller than the sum of its proper divisors (890155793702).

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

877877778778 is a wasteful number, since it uses less digits than its factorization.

877877778778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438500422.

The product of its digits is 23612624896, while the sum is 88.

The spelling of 877877778778 in words is "eight hundred seventy-seven billion, eight hundred seventy-seven million, seven hundred seventy-eight thousand, seven hundred seventy-eight".