20116761336643 has 16 divisors (see below), whose sum is σ = 20794643398656. Its totient is φ = 19440699585120.

The previous prime is 20116761336587. The next prime is 20116761336677. The reversal of 20116761336643 is 34663316761102.

It is a cyclic number.

It is not a de Polignac number, because 20116761336643 - 2³³ = 20108171402051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20116761337643) 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 in 15 ways as a sum of consecutive naturals, for example, 116476530 + ... + 116649112.

It is an arithmetic number, because the mean of its divisors is an integer number (1299665212416).

Almost surely, 2^{20116761336643} is an apocalyptic number.

20116761336643 is a deficient number, since it is larger than the sum of its proper divisors (677882062013).

20116761336643 is a wasteful number, since it uses less digits than its factorization.

20116761336643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177834.

The product of its (nonzero) digits is 1959552, while the sum is 49.

The spelling of 20116761336643 in words is "twenty trillion, one hundred sixteen billion, seven hundred sixty-one million, three hundred thirty-six thousand, six hundred forty-three".