27566750413 has 2 divisors, whose sum is σ = 27566750414. Its totient is φ = 27566750412.

The previous prime is 27566750347. The next prime is 27566750443. The reversal of 27566750413 is 31405766572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27093818404 + 472932009 = 164602^2 + 21747^2 .

It is a cyclic number.

It is not a de Polignac number, because 27566750413 - 2²¹ = 27564653261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27566750443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13783375206 + 13783375207.

It is an arithmetic number, because the mean of its divisors is an integer number (13783375207).

Almost surely, 2^27566750413 is an apocalyptic number.

It is an amenable number.

27566750413 is a deficient number, since it is larger than the sum of its proper divisors (1).

27566750413 is an equidigital number, since it uses as much as digits as its factorization.

27566750413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1058400, while the sum is 46.

The spelling of 27566750413 in words is "twenty-seven billion, five hundred sixty-six million, seven hundred fifty thousand, four hundred thirteen".