27465918461 has 2 divisors, whose sum is σ = 27465918462. Its totient is φ = 27465918460.

The previous prime is 27465918451. The next prime is 27465918511. The reversal of 27465918461 is 16481956472.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21485989561 + 5979928900 = 146581^2 + 77330^2 .

It is a cyclic number.

It is not a de Polignac number, because 27465918461 - 2²⁶ = 27398809597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27465918401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13732959230 + 13732959231.

It is an arithmetic number, because the mean of its divisors is an integer number (13732959231).

Almost surely, 2^27465918461 is an apocalyptic number.

It is an amenable number.

27465918461 is a deficient number, since it is larger than the sum of its proper divisors (1).

27465918461 is an equidigital number, since it uses as much as digits as its factorization.

27465918461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 53.

The spelling of 27465918461 in words is "twenty-seven billion, four hundred sixty-five million, nine hundred eighteen thousand, four hundred sixty-one".