27252978413 has 2 divisors, whose sum is σ = 27252978414. Its totient is φ = 27252978412.

The previous prime is 27252978397. The next prime is 27252978437. The reversal of 27252978413 is 31487925272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18105586249 + 9147392164 = 134557^2 + 95642^2 .

It is a cyclic number.

It is not a de Polignac number, because 27252978413 - 2⁴ = 27252978397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27252971413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13626489206 + 13626489207.

It is an arithmetic number, because the mean of its divisors is an integer number (13626489207).

Almost surely, 2^27252978413 is an apocalyptic number.

It is an amenable number.

27252978413 is a deficient number, since it is larger than the sum of its proper divisors (1).

27252978413 is an equidigital number, since it uses as much as digits as its factorization.

27252978413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1693440, while the sum is 50.

The spelling of 27252978413 in words is "twenty-seven billion, two hundred fifty-two million, nine hundred seventy-eight thousand, four hundred thirteen".