27142846178957 has 2 divisors, whose sum is σ = 27142846178958. Its totient is φ = 27142846178956.

The previous prime is 27142846178813. The next prime is 27142846179041. The reversal of 27142846178957 is 75987164824172.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15635784632521 + 11507061546436 = 3954211^2 + 3392206^2 .

It is a cyclic number.

It is not a de Polignac number, because 27142846178957 - 2¹⁰ = 27142846177933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27142846178057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13571423089478 + 13571423089479.

It is an arithmetic number, because the mean of its divisors is an integer number (13571423089479).

Almost surely, 2^{27142846178957} is an apocalyptic number.

It is an amenable number.

27142846178957 is a deficient number, since it is larger than the sum of its proper divisors (1).

27142846178957 is an equidigital number, since it uses as much as digits as its factorization.

27142846178957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 379330560, while the sum is 71.

The spelling of 27142846178957 in words is "twenty-seven trillion, one hundred forty-two billion, eight hundred forty-six million, one hundred seventy-eight thousand, nine hundred fifty-seven".