27591913249 has 2 divisors, whose sum is σ = 27591913250. Its totient is φ = 27591913248.

The previous prime is 27591913231. The next prime is 27591913337. The reversal of 27591913249 is 94231919572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19461645025 + 8130268224 = 139505^2 + 90168^2 .

It is a cyclic number.

It is not a de Polignac number, because 27591913249 - 2²¹ = 27589816097 is a prime.

It is a super-2 number, since 2×27591913249² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27591913196 and 27591913205.

It is not a weakly prime, because it can be changed into another prime (27591913849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13795956624 + 13795956625.

It is an arithmetic number, because the mean of its divisors is an integer number (13795956625).

Almost surely, 2^27591913249 is an apocalyptic number.

It is an amenable number.

27591913249 is a deficient number, since it is larger than the sum of its proper divisors (1).

27591913249 is an equidigital number, since it uses as much as digits as its factorization.

27591913249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1224720, while the sum is 52.

The spelling of 27591913249 in words is "twenty-seven billion, five hundred ninety-one million, nine hundred thirteen thousand, two hundred forty-nine".