27750278790 has 48 divisors (see below), whose sum is σ = 77700783888. Its totient is φ = 6830837568.

The previous prime is 27750278789. The next prime is 27750278813. The reversal of 27750278790 is 9787205772.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11857924 + ... + 11860263.

It is an arithmetic number, because the mean of its divisors is an integer number (1618766331).

Almost surely, 2^27750278790 is an apocalyptic number.

27750278790 is an abundant number, since it is smaller than the sum of its proper divisors (49950505098).

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

27750278790 is a wasteful number, since it uses less digits than its factorization.

27750278790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23718213 (or 23718210 counting only the distinct ones).

The product of its (nonzero) digits is 3457440, while the sum is 54.

The spelling of 27750278790 in words is "twenty-seven billion, seven hundred fifty million, two hundred seventy-eight thousand, seven hundred ninety".