27864971833 has 2 divisors, whose sum is σ = 27864971834. Its totient is φ = 27864971832.

The previous prime is 27864971809. The next prime is 27864971857. The reversal of 27864971833 is 33817946872.

It is a balanced prime because it is at equal distance from previous prime (27864971809) and next prime (27864971857).

It can be written as a sum of positive squares in only one way, i.e., 21605472144 + 6259499689 = 146988^2 + 79117^2 .

It is a cyclic number.

It is not a de Polignac number, because 27864971833 - 2¹³ = 27864963641 is a prime.

It is not a weakly prime, because it can be changed into another prime (27864971803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13932485916 + 13932485917.

It is an arithmetic number, because the mean of its divisors is an integer number (13932485917).

Almost surely, 2^27864971833 is an apocalyptic number.

It is an amenable number.

27864971833 is a deficient number, since it is larger than the sum of its proper divisors (1).

27864971833 is an equidigital number, since it uses as much as digits as its factorization.

27864971833 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12192768, while the sum is 58.

The spelling of 27864971833 in words is "twenty-seven billion, eight hundred sixty-four million, nine hundred seventy-one thousand, eight hundred thirty-three".