27299273641 has 2 divisors, whose sum is σ = 27299273642. Its totient is φ = 27299273640.

The previous prime is 27299273611. The next prime is 27299273681. The reversal of 27299273641 is 14637299272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15877008016 + 11422265625 = 126004^2 + 106875^2 .

It is a cyclic number.

It is not a de Polignac number, because 27299273641 - 2⁵ = 27299273609 is a prime.

It is not a weakly prime, because it can be changed into another prime (27299273611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13649636820 + 13649636821.

It is an arithmetic number, because the mean of its divisors is an integer number (13649636821).

Almost surely, 2^27299273641 is an apocalyptic number.

It is an amenable number.

27299273641 is a deficient number, since it is larger than the sum of its proper divisors (1).

27299273641 is an equidigital number, since it uses as much as digits as its factorization.

27299273641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2286144, while the sum is 52.

The spelling of 27299273641 in words is "twenty-seven billion, two hundred ninety-nine million, two hundred seventy-three thousand, six hundred forty-one".