27549992993 has 2 divisors, whose sum is σ = 27549992994. Its totient is φ = 27549992992.

The previous prime is 27549992933. The next prime is 27549993001. The reversal of 27549992993 is 39929994572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16308056209 + 11241936784 = 127703^2 + 106028^2 .

It is a cyclic number.

It is not a de Polignac number, because 27549992993 - 2¹² = 27549988897 is a prime.

It is a super-2 number, since 2×27549992993² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (27549992903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13774996496 + 13774996497.

It is an arithmetic number, because the mean of its divisors is an integer number (13774996497).

Almost surely, 2^27549992993 is an apocalyptic number.

It is an amenable number.

27549992993 is a deficient number, since it is larger than the sum of its proper divisors (1).

27549992993 is an equidigital number, since it uses as much as digits as its factorization.

27549992993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 99202320, while the sum is 68.

The spelling of 27549992993 in words is "twenty-seven billion, five hundred forty-nine million, nine hundred ninety-two thousand, nine hundred ninety-three".