27578661051 has 16 divisors (see below), whose sum is σ = 37174142720. Its totient is φ = 18185070240.

The previous prime is 27578661041. The next prime is 27578661053. The reversal of 27578661051 is 15016687572.

It is not a de Polignac number, because 27578661051 - 2⁹ = 27578660539 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27578661053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112866 + ... + 260568.

It is an arithmetic number, because the mean of its divisors is an integer number (2323383920).

Almost surely, 2^27578661051 is an apocalyptic number.

27578661051 is a deficient number, since it is larger than the sum of its proper divisors (9595481669).

27578661051 is a wasteful number, since it uses less digits than its factorization.

27578661051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148386.

The product of its (nonzero) digits is 705600, while the sum is 48.

The spelling of 27578661051 in words is "twenty-seven billion, five hundred seventy-eight million, six hundred sixty-one thousand, fifty-one".