27077493893 has 2 divisors, whose sum is σ = 27077493894. Its totient is φ = 27077493892.

The previous prime is 27077493887. The next prime is 27077493979. The reversal of 27077493893 is 39839477072.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14680230244 + 12397263649 = 121162^2 + 111343^2 .

It is a cyclic number.

It is not a de Polignac number, because 27077493893 - 2¹⁸ = 27077231749 is a prime.

It is a super-4 number, since 4×27077493893⁴ (a number of 43 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27077493803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13538746946 + 13538746947.

It is an arithmetic number, because the mean of its divisors is an integer number (13538746947).

Almost surely, 2^27077493893 is an apocalyptic number.

It is an amenable number.

27077493893 is a deficient number, since it is larger than the sum of its proper divisors (1).

27077493893 is an equidigital number, since it uses as much as digits as its factorization.

27077493893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16003008, while the sum is 59.

The spelling of 27077493893 in words is "twenty-seven billion, seventy-seven million, four hundred ninety-three thousand, eight hundred ninety-three".