27812261423 has 2 divisors, whose sum is σ = 27812261424. Its totient is φ = 27812261422.

The previous prime is 27812261383. The next prime is 27812261431. The reversal of 27812261423 is 32416221872.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27812261423 - 2¹⁴ = 27812245039 is a prime.

It is a super-2 number, since 2×27812261423² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27812261453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13906130711 + 13906130712.

It is an arithmetic number, because the mean of its divisors is an integer number (13906130712).

Almost surely, 2^27812261423 is an apocalyptic number.

27812261423 is a deficient number, since it is larger than the sum of its proper divisors (1).

27812261423 is an equidigital number, since it uses as much as digits as its factorization.

27812261423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 38.

The spelling of 27812261423 in words is "twenty-seven billion, eight hundred twelve million, two hundred sixty-one thousand, four hundred twenty-three".