27321227477 has 2 divisors, whose sum is σ = 27321227478. Its totient is φ = 27321227476.

The previous prime is 27321227429. The next prime is 27321227519. The reversal of 27321227477 is 77472212372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16710991441 + 10610236036 = 129271^2 + 103006^2 .

It is a cyclic number.

It is not a de Polignac number, because 27321227477 - 2²⁰ = 27320178901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27321227407) 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, 13660613738 + 13660613739.

It is an arithmetic number, because the mean of its divisors is an integer number (13660613739).

Almost surely, 2^27321227477 is an apocalyptic number.

It is an amenable number.

27321227477 is a deficient number, since it is larger than the sum of its proper divisors (1).

27321227477 is an equidigital number, since it uses as much as digits as its factorization.

27321227477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 460992, while the sum is 44.

The spelling of 27321227477 in words is "twenty-seven billion, three hundred twenty-one million, two hundred twenty-seven thousand, four hundred seventy-seven".