278377151068 has 12 divisors (see below), whose sum is σ = 487171883520. Its totient is φ = 139185184352.

The previous prime is 278377151047. The next prime is 278377151071. The reversal of 278377151068 is 860151773872.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 658396 + ... + 995107.

It is an arithmetic number, because the mean of its divisors is an integer number (40597656960).

Almost surely, 2^278377151068 is an apocalyptic number.

It is an amenable number.

278377151068 is a deficient number, since it is larger than the sum of its proper divisors (208794732452).

278377151068 is a wasteful number, since it uses less digits than its factorization.

278377151068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695596 (or 1695594 counting only the distinct ones).

The product of its (nonzero) digits is 3951360, while the sum is 55.

The spelling of 278377151068 in words is "two hundred seventy-eight billion, three hundred seventy-seven million, one hundred fifty-one thousand, sixty-eight".