278059387680 has 192 divisors, whose sum is σ = 974572300800. Its totient is φ = 74045214720.

The previous prime is 278059387651. The next prime is 278059387699. The reversal of 278059387680 is 86783950872.

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, 3061320 + ... + 3150840.

It is an arithmetic number, because the mean of its divisors is an integer number (5075897400).

Almost surely, 2^278059387680 is an apocalyptic number.

278059387680 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 278059387680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (487286150400).

278059387680 is an abundant number, since it is smaller than the sum of its proper divisors (696512913120).

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

278059387680 is a wasteful number, since it uses less digits than its factorization.

278059387680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90264 (or 90250 counting only the distinct ones).

The product of its (nonzero) digits is 40642560, while the sum is 63.

The spelling of 278059387680 in words is "two hundred seventy-eight billion, fifty-nine million, three hundred eighty-seven thousand, six hundred eighty".