27564727373 has 2 divisors, whose sum is σ = 27564727374. Its totient is φ = 27564727372.

The previous prime is 27564727369. The next prime is 27564727403. The reversal of 27564727373 is 37372746572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27133666729 + 431060644 = 164723^2 + 20762^2 .

It is a cyclic number.

It is not a de Polignac number, because 27564727373 - 2² = 27564727369 is a prime.

It is a super-2 number, since 2×27564727373² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27564727303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13782363686 + 13782363687.

It is an arithmetic number, because the mean of its divisors is an integer number (13782363687).

Almost surely, 2^27564727373 is an apocalyptic number.

It is an amenable number.

27564727373 is a deficient number, since it is larger than the sum of its proper divisors (1).

27564727373 is an equidigital number, since it uses as much as digits as its factorization.

27564727373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10372320, while the sum is 53.

The spelling of 27564727373 in words is "twenty-seven billion, five hundred sixty-four million, seven hundred twenty-seven thousand, three hundred seventy-three".