27465132557 has 2 divisors, whose sum is σ = 27465132558. Its totient is φ = 27465132556.

The previous prime is 27465132553. The next prime is 27465132571. The reversal of 27465132557 is 75523156472.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27398856676 + 66275881 = 165526^2 + 8141^2 .

It is a cyclic number.

It is not a de Polignac number, because 27465132557 - 2² = 27465132553 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27465132553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13732566278 + 13732566279.

It is an arithmetic number, because the mean of its divisors is an integer number (13732566279).

Almost surely, 2^27465132557 is an apocalyptic number.

It is an amenable number.

27465132557 is a deficient number, since it is larger than the sum of its proper divisors (1).

27465132557 is an equidigital number, since it uses as much as digits as its factorization.

27465132557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1764000, while the sum is 47.

The spelling of 27465132557 in words is "twenty-seven billion, four hundred sixty-five million, one hundred thirty-two thousand, five hundred fifty-seven".