27231777023887 has 2 divisors, whose sum is σ = 27231777023888. Its totient is φ = 27231777023886.

The previous prime is 27231777023861. The next prime is 27231777023921. The reversal of 27231777023887 is 78832077713272.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27231777023887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27231777023687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13615888511943 + 13615888511944.

It is an arithmetic number, because the mean of its divisors is an integer number (13615888511944).

Almost surely, 2^{27231777023887} is an apocalyptic number.

27231777023887 is a deficient number, since it is larger than the sum of its proper divisors (1).

27231777023887 is an equidigital number, since it uses as much as digits as its factorization.

27231777023887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77446656, while the sum is 64.

The spelling of 27231777023887 in words is "twenty-seven trillion, two hundred thirty-one billion, seven hundred seventy-seven million, twenty-three thousand, eight hundred eighty-seven".