27155098871 has 2 divisors, whose sum is σ = 27155098872. Its totient is φ = 27155098870.

The previous prime is 27155098811. The next prime is 27155098913. The reversal of 27155098871 is 17889055172.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27155098871 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27155098811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13577549435 + 13577549436.

It is an arithmetic number, because the mean of its divisors is an integer number (13577549436).

Almost surely, 2^27155098871 is an apocalyptic number.

27155098871 is a deficient number, since it is larger than the sum of its proper divisors (1).

27155098871 is an equidigital number, since it uses as much as digits as its factorization.

27155098871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1411200, while the sum is 53.

The spelling of 27155098871 in words is "twenty-seven billion, one hundred fifty-five million, ninety-eight thousand, eight hundred seventy-one".