278773872480 has 192 divisors, whose sum is σ = 976197458880. Its totient is φ = 74302451712.

The previous prime is 278773872439. The next prime is 278773872527. The reversal of 278773872480 is 84278377872.

278773872480 is a `hidden beast` number, since 2 + 7 + 8 + 7 + 7 + 387 + 248 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9216742 + ... + 9246938.

It is an arithmetic number, because the mean of its divisors is an integer number (5084361765).

Almost surely, 2^278773872480 is an apocalyptic number.

278773872480 is a gapful number since it is divisible by the number (20) 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 278773872480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (488098729440).

278773872480 is an abundant number, since it is smaller than the sum of its proper divisors (697423586400).

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

278773872480 is a wasteful number, since it uses less digits than its factorization.

278773872480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32358 (or 32344 counting only the distinct ones).

The product of its (nonzero) digits is 59006976, while the sum is 63.

The spelling of 278773872480 in words is "two hundred seventy-eight billion, seven hundred seventy-three million, eight hundred seventy-two thousand, four hundred eighty".