27642921992 has 32 divisors (see below), whose sum is σ = 59240445120. Its totient is φ = 11845844160.

The previous prime is 27642921931. The next prime is 27642922009. The reversal of 27642921992 is 29912924672.

It is a super-2 number, since 2×27642921992² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

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, 885758 + ... + 916434.

It is an arithmetic number, because the mean of its divisors is an integer number (1851263910).

Almost surely, 2^27642921992 is an apocalyptic number.

It is an amenable number.

27642921992 is an abundant number, since it is smaller than the sum of its proper divisors (31597523128).

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

27642921992 is a wasteful number, since it uses less digits than its factorization.

27642921992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46781 (or 46777 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 53.

The spelling of 27642921992 in words is "twenty-seven billion, six hundred forty-two million, nine hundred twenty-one thousand, nine hundred ninety-two".