27315702749 has 2 divisors, whose sum is σ = 27315702750. Its totient is φ = 27315702748.

The previous prime is 27315702709. The next prime is 27315702761. The reversal of 27315702749 is 94720751372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22533012100 + 4782690649 = 150110^2 + 69157^2 .

It is a cyclic number.

It is not a de Polignac number, because 27315702749 - 2¹² = 27315698653 is a prime.

It is a super-2 number, since 2×27315702749² (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 (27315702709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13657851374 + 13657851375.

It is an arithmetic number, because the mean of its divisors is an integer number (13657851375).

Almost surely, 2^27315702749 is an apocalyptic number.

It is an amenable number.

27315702749 is a deficient number, since it is larger than the sum of its proper divisors (1).

27315702749 is an equidigital number, since it uses as much as digits as its factorization.

27315702749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 740880, while the sum is 47.

The spelling of 27315702749 in words is "twenty-seven billion, three hundred fifteen million, seven hundred two thousand, seven hundred forty-nine".