278784057345112 has 96 divisors (see below), whose sum is σ = 593160614794800. Its totient is φ = 121816081497600.

The previous prime is 278784057345067. The next prime is 278784057345169. The reversal of 278784057345112 is 211543750487872.

It is a happy number.

278784057345112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8723062 + ... + 25172602.

Almost surely, 2^{278784057345112} is an apocalyptic number.

278784057345112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 278784057345112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296580307397400).

278784057345112 is an abundant number, since it is smaller than the sum of its proper divisors (314376557449688).

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

278784057345112 is a wasteful number, since it uses less digits than its factorization.

278784057345112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16449845 (or 16449812 counting only the distinct ones).

The product of its (nonzero) digits is 105369600, while the sum is 64.

The spelling of 278784057345112 in words is "two hundred seventy-eight trillion, seven hundred eighty-four billion, fifty-seven million, three hundred forty-five thousand, one hundred twelve".