27117393990451 has 2 divisors, whose sum is σ = 27117393990452. Its totient is φ = 27117393990450.

The previous prime is 27117393990403. The next prime is 27117393990469. The reversal of 27117393990451 is 15409939371172.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27117393990451 - 2³⁵ = 27083034252083 is a prime.

It is a super-3 number, since 3×27117393990451³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27117393990451.

It is not a weakly prime, because it can be changed into another prime (27117393993451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13558696995225 + 13558696995226.

It is an arithmetic number, because the mean of its divisors is an integer number (13558696995226).

Almost surely, 2^{27117393990451} is an apocalyptic number.

27117393990451 is a deficient number, since it is larger than the sum of its proper divisors (1).

27117393990451 is an equidigital number, since it uses as much as digits as its factorization.

27117393990451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12859560, while the sum is 61.

The spelling of 27117393990451 in words is "twenty-seven trillion, one hundred seventeen billion, three hundred ninety-three million, nine hundred ninety thousand, four hundred fifty-one".