27380913797 has 2 divisors, whose sum is σ = 27380913798. Its totient is φ = 27380913796.

The previous prime is 27380913739. The next prime is 27380913809. The reversal of 27380913797 is 79731908372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18890028481 + 8490885316 = 137441^2 + 92146^2 .

It is a cyclic number.

It is not a de Polignac number, because 27380913797 - 2¹² = 27380909701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27380913727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13690456898 + 13690456899.

It is an arithmetic number, because the mean of its divisors is an integer number (13690456899).

Almost surely, 2^27380913797 is an apocalyptic number.

It is an amenable number.

27380913797 is a deficient number, since it is larger than the sum of its proper divisors (1).

27380913797 is an equidigital number, since it uses as much as digits as its factorization.

27380913797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4000752, while the sum is 56.

The spelling of 27380913797 in words is "twenty-seven billion, three hundred eighty million, nine hundred thirteen thousand, seven hundred ninety-seven".