27772587631 has 2 divisors, whose sum is σ = 27772587632. Its totient is φ = 27772587630.

The previous prime is 27772587629. The next prime is 27772587709. The reversal of 27772587631 is 13678527772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27772587631 - 2¹ = 27772587629 is a prime.

It is a super-2 number, since 2×27772587631² (a number of 22 digits) contains 22 as substring.

Together with 27772587629, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27772588631) 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, 13886293815 + 13886293816.

It is an arithmetic number, because the mean of its divisors is an integer number (13886293816).

Almost surely, 2^27772587631 is an apocalyptic number.

27772587631 is a deficient number, since it is larger than the sum of its proper divisors (1).

27772587631 is an equidigital number, since it uses as much as digits as its factorization.

27772587631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6914880, while the sum is 55.

The spelling of 27772587631 in words is "twenty-seven billion, seven hundred seventy-two million, five hundred eighty-seven thousand, six hundred thirty-one".