27791166521706 has 32 divisors (see below), whose sum is σ = 64007572197888. Its totient is φ = 7879720059120.

The previous prime is 27791166521693. The next prime is 27791166521711. The reversal of 27791166521706 is 60712566119772.

It is a self number, because there is not a number n which added to its sum of digits gives 27791166521706.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2525545800 + ... + 2525556803.

It is an arithmetic number, because the mean of its divisors is an integer number (2000236631184).

Almost surely, 2^{27791166521706} is an apocalyptic number.

27791166521706 is an abundant number, since it is smaller than the sum of its proper divisors (36216405676182).

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

27791166521706 is a wasteful number, since it uses less digits than its factorization.

27791166521706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5051102746.

The product of its (nonzero) digits is 13335840, while the sum is 60.

The spelling of 27791166521706 in words is "twenty-seven trillion, seven hundred ninety-one billion, one hundred sixty-six million, five hundred twenty-one thousand, seven hundred six".