278999924112 has 480 divisors, whose sum is σ = 1003275786240. Its totient is φ = 70399549440.

The previous prime is 278999924041. The next prime is 278999924141. The reversal of 278999924112 is 211429999872.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 278999924112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 36150078 + ... + 36157794.

It is an arithmetic number, because the mean of its divisors is an integer number (2090157888).

Almost surely, 2^278999924112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 278999924112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (501637893120).

278999924112 is an abundant number, since it is smaller than the sum of its proper divisors (724275862128).

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

278999924112 is a wasteful number, since it uses less digits than its factorization.

278999924112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7871 (or 7862 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 63.

The spelling of 278999924112 in words is "two hundred seventy-eight billion, nine hundred ninety-nine million, nine hundred twenty-four thousand, one hundred twelve".