278055360540 has 72 divisors (see below), whose sum is σ = 887825898960. Its totient is φ = 70245563904.

The previous prime is 278055360511. The next prime is 278055360551. The reversal of 278055360540 is 45063550872.

278055360540 is a `hidden beast` number, since 2 + 78 + 0 + 5 + 5 + 36 + 0 + 540 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40647949 + ... + 40654788.

Almost surely, 2^278055360540 is an apocalyptic number.

278055360540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

278055360540 is an abundant number, since it is smaller than the sum of its proper divisors (609770538420).

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

278055360540 is a wasteful number, since it uses less digits than its factorization.

278055360540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81302771 (or 81302766 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 45.

The spelling of 278055360540 in words is "two hundred seventy-eight billion, fifty-five million, three hundred sixty thousand, five hundred forty".