278552635882 has 16 divisors (see below), whose sum is σ = 422890917120. Its totient is φ = 137589218272.

The previous prime is 278552635877. The next prime is 278552635891. The reversal of 278552635882 is 288536255872.

It is a self number, because there is not a number n which added to its sum of digits gives 278552635882.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2965494 + ... + 3057982.

It is an arithmetic number, because the mean of its divisors is an integer number (26430682320).

Almost surely, 2^278552635882 is an apocalyptic number.

278552635882 is a deficient number, since it is larger than the sum of its proper divisors (144338281238).

278552635882 is a wasteful number, since it uses less digits than its factorization.

278552635882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110717.

The product of its digits is 64512000, while the sum is 61.

The spelling of 278552635882 in words is "two hundred seventy-eight billion, five hundred fifty-two million, six hundred thirty-five thousand, eight hundred eighty-two".