27286618678453 has 2 divisors, whose sum is σ = 27286618678454. Its totient is φ = 27286618678452.

The previous prime is 27286618678411. The next prime is 27286618678507. The reversal of 27286618678453 is 35487681668272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15464973097809 + 11821645580644 = 3932553^2 + 3438262^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27286618678453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27286618678853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13643309339226 + 13643309339227.

It is an arithmetic number, because the mean of its divisors is an integer number (13643309339227).

Almost surely, 2^{27286618678453} is an apocalyptic number.

It is an amenable number.

27286618678453 is a deficient number, since it is larger than the sum of its proper divisors (1).

27286618678453 is an equidigital number, since it uses as much as digits as its factorization.

27286618678453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1300561920, while the sum is 73.

The spelling of 27286618678453 in words is "twenty-seven trillion, two hundred eighty-six billion, six hundred eighteen million, six hundred seventy-eight thousand, four hundred fifty-three".