27326740997 has 2 divisors, whose sum is σ = 27326740998. Its totient is φ = 27326740996.

The previous prime is 27326740939. The next prime is 27326741023. The reversal of 27326740997 is 79904762372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18394411876 + 8932329121 = 135626^2 + 94511^2 .

It is a cyclic number.

It is not a de Polignac number, because 27326740997 - 2⁸ = 27326740741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27326742997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13663370498 + 13663370499.

It is an arithmetic number, because the mean of its divisors is an integer number (13663370499).

Almost surely, 2^27326740997 is an apocalyptic number.

It is an amenable number.

27326740997 is a deficient number, since it is larger than the sum of its proper divisors (1).

27326740997 is an equidigital number, since it uses as much as digits as its factorization.

27326740997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8001504, while the sum is 56.

The spelling of 27326740997 in words is "twenty-seven billion, three hundred twenty-six million, seven hundred forty thousand, nine hundred ninety-seven".