27215997073 has 2 divisors, whose sum is σ = 27215997074. Its totient is φ = 27215997072.

The previous prime is 27215997071. The next prime is 27215997077. The reversal of 27215997073 is 37079951272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24470970624 + 2745026449 = 156432^2 + 52393^2 .

It is a cyclic number.

It is not a de Polignac number, because 27215997073 - 2¹ = 27215997071 is a prime.

Together with 27215997071, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 27215997073.

It is not a weakly prime, because it can be changed into another prime (27215997071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13607998536 + 13607998537.

It is an arithmetic number, because the mean of its divisors is an integer number (13607998537).

Almost surely, 2^27215997073 is an apocalyptic number.

It is an amenable number.

27215997073 is a deficient number, since it is larger than the sum of its proper divisors (1).

27215997073 is an equidigital number, since it uses as much as digits as its factorization.

27215997073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1666980, while the sum is 52.

The spelling of 27215997073 in words is "twenty-seven billion, two hundred fifteen million, nine hundred ninety-seven thousand, seventy-three".