278123205451080 has 128 divisors (see below), whose sum is σ = 932421921782400. Its totient is φ = 65779324262400.

The previous prime is 278123205451079. The next prime is 278123205451087. The reversal of 278123205451080 is 80154502321872.

It is not an unprimeable number, because it can be changed into a prime (278123205451087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2569450735 + ... + 2569558974.

It is an arithmetic number, because the mean of its divisors is an integer number (7284546263925).

Almost surely, 2^{278123205451080} is an apocalyptic number.

278123205451080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

278123205451080 is an abundant number, since it is smaller than the sum of its proper divisors (654298716331320).

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

278123205451080 is a wasteful number, since it uses less digits than its factorization.

278123205451080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5139009775 (or 5139009771 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 48.

The spelling of 278123205451080 in words is "two hundred seventy-eight trillion, one hundred twenty-three billion, two hundred five million, four hundred fifty-one thousand, eighty".