27402498397 has 2 divisors, whose sum is σ = 27402498398. Its totient is φ = 27402498396.

The previous prime is 27402498323. The next prime is 27402498419. The reversal of 27402498397 is 79389420472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26838958276 + 563540121 = 163826^2 + 23739^2 .

It is a cyclic number.

It is not a de Polignac number, because 27402498397 - 2¹⁹ = 27401974109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27402498317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13701249198 + 13701249199.

It is an arithmetic number, because the mean of its divisors is an integer number (13701249199).

Almost surely, 2^27402498397 is an apocalyptic number.

It is an amenable number.

27402498397 is a deficient number, since it is larger than the sum of its proper divisors (1).

27402498397 is an equidigital number, since it uses as much as digits as its factorization.

27402498397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6096384, while the sum is 55.

The spelling of 27402498397 in words is "twenty-seven billion, four hundred two million, four hundred ninety-eight thousand, three hundred ninety-seven".