20694189468843 has 40 divisors (see below), whose sum is σ = 33724749207600. Its totient is φ = 12541603921920.

The previous prime is 20694189468781. The next prime is 20694189468847. The reversal of 20694189468843 is 34886498149602.

20694189468843 is a `hidden beast` number, since 2 + 0 + 6 + 9 + 4 + 1 + 89 + 468 + 84 + 3 = 666.

It is not a de Polignac number, because 20694189468843 - 2¹² = 20694189464747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20694189468847) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 36112171 + ... + 36680747.

It is an arithmetic number, because the mean of its divisors is an integer number (843118730190).

Almost surely, 2^{20694189468843} is an apocalyptic number.

20694189468843 is a deficient number, since it is larger than the sum of its proper divisors (13030559738757).

20694189468843 is a wasteful number, since it uses less digits than its factorization.

20694189468843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609449 (or 609440 counting only the distinct ones).

The product of its (nonzero) digits is 573308928, while the sum is 72.

The spelling of 20694189468843 in words is "twenty trillion, six hundred ninety-four billion, one hundred eighty-nine million, four hundred sixty-eight thousand, eight hundred forty-three".