278045585580 has 96 divisors (see below), whose sum is σ = 889815951360. Its totient is φ = 63548271360.

The previous prime is 278045585561. The next prime is 278045585633. The reversal of 278045585580 is 85585540872.

It is a self number, because there is not a number n which added to its sum of digits gives 278045585580.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9170686 + ... + 9200954.

It is an arithmetic number, because the mean of its divisors is an integer number (9268916160).

Almost surely, 2^278045585580 is an apocalyptic number.

278045585580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

278045585580 is an abundant number, since it is smaller than the sum of its proper divisors (611770365780).

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

278045585580 is a wasteful number, since it uses less digits than its factorization.

278045585580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52159 (or 52157 counting only the distinct ones).

The product of its (nonzero) digits is 17920000, while the sum is 57.

The spelling of 278045585580 in words is "two hundred seventy-eight billion, forty-five million, five hundred eighty-five thousand, five hundred eighty".