27406000640797 has 2 divisors, whose sum is σ = 27406000640798. Its totient is φ = 27406000640796.

The previous prime is 27406000640713. The next prime is 27406000640807. The reversal of 27406000640797 is 79704600060472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23978444574841 + 3427556065956 = 4896779^2 + 1851366^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27406000640797 is a prime.

It is a super-2 number, since 2×27406000640797² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27406000641797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13703000320398 + 13703000320399.

It is an arithmetic number, because the mean of its divisors is an integer number (13703000320399).

Almost surely, 2^{27406000640797} is an apocalyptic number.

It is an amenable number.

27406000640797 is a deficient number, since it is larger than the sum of its proper divisors (1).

27406000640797 is an equidigital number, since it uses as much as digits as its factorization.

27406000640797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3556224, while the sum is 52.

The spelling of 27406000640797 in words is "twenty-seven trillion, four hundred six billion, six hundred forty thousand, seven hundred ninety-seven".