27145395187 has 2 divisors, whose sum is σ = 27145395188. Its totient is φ = 27145395186.

The previous prime is 27145395143. The next prime is 27145395191. The reversal of 27145395187 is 78159354172.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27145395187 - 2³¹ = 24997911539 is a prime.

It is not a weakly prime, because it can be changed into another prime (27145395127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13572697593 + 13572697594.

It is an arithmetic number, because the mean of its divisors is an integer number (13572697594).

Almost surely, 2^27145395187 is an apocalyptic number.

27145395187 is a deficient number, since it is larger than the sum of its proper divisors (1).

27145395187 is an equidigital number, since it uses as much as digits as its factorization.

27145395187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2116800, while the sum is 52.

The spelling of 27145395187 in words is "twenty-seven billion, one hundred forty-five million, three hundred ninety-five thousand, one hundred eighty-seven".