2878027778790 has 48 divisors (see below), whose sum is σ = 7521643628928. Its totient is φ = 763497520128.

The previous prime is 2878027778753. The next prime is 2878027778809. The reversal of 2878027778790 is 978777208782.

2878027778790 is a `hidden beast` number, since 287 + 8 + 0 + 277 + 7 + 8 + 79 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82827414 + ... + 82862153.

It is an arithmetic number, because the mean of its divisors is an integer number (156700908936).

Almost surely, 2^{2878027778790} is an apocalyptic number.

2878027778790 is an abundant number, since it is smaller than the sum of its proper divisors (4643615850138).

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

2878027778790 is a wasteful number, since it uses less digits than its factorization.

2878027778790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165689773 (or 165689770 counting only the distinct ones).

The product of its (nonzero) digits is 309786624, while the sum is 72.

The spelling of 2878027778790 in words is "two trillion, eight hundred seventy-eight billion, twenty-seven million, seven hundred seventy-eight thousand, seven hundred ninety".