2116663440405 has 32 divisors (see below), whose sum is σ = 3552218171136. Its totient is φ = 1074210238464.

The previous prime is 2116663440271. The next prime is 2116663440421. The reversal of 2116663440405 is 5040443666112.

It is not a de Polignac number, because 2116663440405 - 2¹⁸ = 2116663178261 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 15827862 + ... + 15961031.

It is an arithmetic number, because the mean of its divisors is an integer number (111006817848).

Almost surely, 2^{2116663440405} is an apocalyptic number.

It is an amenable number.

2116663440405 is a deficient number, since it is larger than the sum of its proper divisors (1435554730731).

2116663440405 is a wasteful number, since it uses less digits than its factorization.

2116663440405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31789117.

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 2116663440405 in words is "two trillion, one hundred sixteen billion, six hundred sixty-three million, four hundred forty thousand, four hundred five".