27986022154813 has 2 divisors, whose sum is σ = 27986022154814. Its totient is φ = 27986022154812.

The previous prime is 27986022154709. The next prime is 27986022154823. The reversal of 27986022154813 is 31845122068972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17468830462329 + 10517191692484 = 4179573^2 + 3243022^2 .

It is a cyclic number.

It is not a de Polignac number, because 27986022154813 - 2¹⁷ = 27986022023741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27986022154823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13993011077406 + 13993011077407.

It is an arithmetic number, because the mean of its divisors is an integer number (13993011077407).

It is a 1-persistent number, because it is pandigital, but 2⋅27986022154813 = 55972044309626 is not.

Almost surely, 2^{27986022154813} is an apocalyptic number.

It is an amenable number.

27986022154813 is a deficient number, since it is larger than the sum of its proper divisors (1).

27986022154813 is an equidigital number, since it uses as much as digits as its factorization.

27986022154813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11612160, while the sum is 58.

The spelling of 27986022154813 in words is "twenty-seven trillion, nine hundred eighty-six billion, twenty-two million, one hundred fifty-four thousand, eight hundred thirteen".