27420971105999 has 2 divisors, whose sum is σ = 27420971106000. Its totient is φ = 27420971105998.

The previous prime is 27420971105953. The next prime is 27420971106017. The reversal of 27420971105999 is 99950117902472.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27420971105999 - 2¹² = 27420971101903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27420971105599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13710485552999 + 13710485553000.

It is an arithmetic number, because the mean of its divisors is an integer number (13710485553000).

Almost surely, 2^{27420971105999} is an apocalyptic number.

27420971105999 is a deficient number, since it is larger than the sum of its proper divisors (1).

27420971105999 is an equidigital number, since it uses as much as digits as its factorization.

27420971105999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25719120, while the sum is 65.

The spelling of 27420971105999 in words is "twenty-seven trillion, four hundred twenty billion, nine hundred seventy-one million, one hundred five thousand, nine hundred ninety-nine".