20036668336842 has 32 divisors (see below), whose sum is σ = 42488955879552. Its totient is φ = 6277367061504.

The previous prime is 20036668336837. The next prime is 20036668336843. The reversal of 20036668336842 is 24863386663002.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (20036668336843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135027583 + ... + 135175890.

It is an arithmetic number, because the mean of its divisors is an integer number (1327779871236).

Almost surely, 2^{20036668336842} is an apocalyptic number.

20036668336842 is an abundant number, since it is smaller than the sum of its proper divisors (22452287542710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20036668336842 is a wasteful number, since it uses less digits than its factorization.

20036668336842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270204222.

The product of its (nonzero) digits is 35831808, while the sum is 57.

The spelling of 20036668336842 in words is "twenty trillion, thirty-six billion, six hundred sixty-eight million, three hundred thirty-six thousand, eight hundred forty-two".