27642405774 has 16 divisors (see below), whose sum is σ = 57191184720. Its totient is φ = 8896406400.

The previous prime is 27642405757. The next prime is 27642405953. The reversal of 27642405774 is 47750424672.

It is a congruent number.

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, 79432027 + ... + 79432374.

It is an arithmetic number, because the mean of its divisors is an integer number (3574449045).

Almost surely, 2^27642405774 is an apocalyptic number.

27642405774 is an abundant number, since it is smaller than the sum of its proper divisors (29548778946).

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

27642405774 is a wasteful number, since it uses less digits than its factorization.

27642405774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158864435.

The product of its (nonzero) digits is 2634240, while the sum is 48.

The spelling of 27642405774 in words is "twenty-seven billion, six hundred forty-two million, four hundred five thousand, seven hundred seventy-four".