27755494913 has 2 divisors, whose sum is σ = 27755494914. Its totient is φ = 27755494912.

The previous prime is 27755494883. The next prime is 27755494939. The reversal of 27755494913 is 31949455772.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14843036224 + 12912458689 = 121832^2 + 113633^2 .

It is a cyclic number.

It is not a de Polignac number, because 27755494913 - 2¹⁰ = 27755493889 is a prime.

It is not a weakly prime, because it can be changed into another prime (27755494813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13877747456 + 13877747457.

It is an arithmetic number, because the mean of its divisors is an integer number (13877747457).

Almost surely, 2^27755494913 is an apocalyptic number.

It is an amenable number.

27755494913 is a deficient number, since it is larger than the sum of its proper divisors (1).

27755494913 is an equidigital number, since it uses as much as digits as its factorization.

27755494913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9525600, while the sum is 56.

The spelling of 27755494913 in words is "twenty-seven billion, seven hundred fifty-five million, four hundred ninety-four thousand, nine hundred thirteen".