2116611543643 has 2 divisors, whose sum is σ = 2116611543644. Its totient is φ = 2116611543642.

The previous prime is 2116611543593. The next prime is 2116611543671. The reversal of 2116611543643 is 3463451166112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2116611543643 - 2⁹ = 2116611543131 is a prime.

It is a super-2 number, since 2×2116611543643² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2116611543643.

It is not a weakly prime, because it can be changed into another prime (2116611543143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1058305771821 + 1058305771822.

It is an arithmetic number, because the mean of its divisors is an integer number (1058305771822).

Almost surely, 2^{2116611543643} is an apocalyptic number.

2116611543643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2116611543643 is an equidigital number, since it uses as much as digits as its factorization.

2116611543643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 43.

The spelling of 2116611543643 in words is "two trillion, one hundred sixteen billion, six hundred eleven million, five hundred forty-three thousand, six hundred forty-three".