2113647618727 has 2 divisors, whose sum is σ = 2113647618728. Its totient is φ = 2113647618726.

The previous prime is 2113647618721. The next prime is 2113647618769. The reversal of 2113647618727 is 7278167463112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2113647618727 - 2¹¹ = 2113647616679 is a prime.

It is a super-2 number, since 2×2113647618727² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2113647618721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056823809363 + 1056823809364.

It is an arithmetic number, because the mean of its divisors is an integer number (1056823809364).

Almost surely, 2^{2113647618727} is an apocalyptic number.

2113647618727 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113647618727 is an equidigital number, since it uses as much as digits as its factorization.

2113647618727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4741632, while the sum is 55.

The spelling of 2113647618727 in words is "two trillion, one hundred thirteen billion, six hundred forty-seven million, six hundred eighteen thousand, seven hundred twenty-seven".