27750413569 has 2 divisors, whose sum is σ = 27750413570. Its totient is φ = 27750413568.

The previous prime is 27750413521. The next prime is 27750413609. The reversal of 27750413569 is 96531405772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14547254544 + 13203159025 = 120612^2 + 114905^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27750413569 is a prime.

It is a super-2 number, since 2×27750413569² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27750413869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13875206784 + 13875206785.

It is an arithmetic number, because the mean of its divisors is an integer number (13875206785).

Almost surely, 2^27750413569 is an apocalyptic number.

It is an amenable number.

27750413569 is a deficient number, since it is larger than the sum of its proper divisors (1).

27750413569 is an equidigital number, since it uses as much as digits as its factorization.

27750413569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1587600, while the sum is 49.

The spelling of 27750413569 in words is "twenty-seven billion, seven hundred fifty million, four hundred thirteen thousand, five hundred sixty-nine".