278047115118 has 96 divisors (see below), whose sum is σ = 661329826560. Its totient is φ = 84047293440.

The previous prime is 278047115117. The next prime is 278047115179. The reversal of 278047115118 is 811511740872.

278047115118 is a `hidden beast` number, since 2 + 7 + 80 + 47 + 11 + 511 + 8 = 666.

278047115118 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278047115117) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2108296 + ... + 2236292.

It is an arithmetic number, because the mean of its divisors is an integer number (6888852360).

Almost surely, 2^278047115118 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 278047115118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330664913280).

278047115118 is an abundant number, since it is smaller than the sum of its proper divisors (383282711442).

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

278047115118 is a wasteful number, since it uses less digits than its factorization.

278047115118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128282 (or 128279 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 45.

The spelling of 278047115118 in words is "two hundred seventy-eight billion, forty-seven million, one hundred fifteen thousand, one hundred eighteen".