78887102238 has 72 divisors (see below), whose sum is σ = 198945393192. Its totient is φ = 22525830432.

The previous prime is 78887102227. The next prime is 78887102251. The reversal of 78887102238 is 83220178887.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1515256 + ... + 1566452.

It is an arithmetic number, because the mean of its divisors is an integer number (2763130461).

Almost surely, 2^78887102238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78887102238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99472696596).

78887102238 is an abundant number, since it is smaller than the sum of its proper divisors (120058290954).

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

78887102238 is a wasteful number, since it uses less digits than its factorization.

78887102238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52966 (or 52956 counting only the distinct ones).

The product of its (nonzero) digits is 2408448, while the sum is 54.

The spelling of 78887102238 in words is "seventy-eight billion, eight hundred eighty-seven million, one hundred two thousand, two hundred thirty-eight".