27145112573 has 2 divisors, whose sum is σ = 27145112574. Its totient is φ = 27145112572.

The previous prime is 27145112551. The next prime is 27145112581. The reversal of 27145112573 is 37521154172.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14470405849 + 12674706724 = 120293^2 + 112582^2 .

It is a cyclic number.

It is not a de Polignac number, because 27145112573 - 2²⁰ = 27144063997 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27145112543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13572556286 + 13572556287.

It is an arithmetic number, because the mean of its divisors is an integer number (13572556287).

Almost surely, 2^27145112573 is an apocalyptic number.

It is an amenable number.

27145112573 is a deficient number, since it is larger than the sum of its proper divisors (1).

27145112573 is an equidigital number, since it uses as much as digits as its factorization.

27145112573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58800, while the sum is 38.

The spelling of 27145112573 in words is "twenty-seven billion, one hundred forty-five million, one hundred twelve thousand, five hundred seventy-three".