20006623321236 has 36 divisors (see below), whose sum is σ = 50573306102592. Its totient is φ = 6668741482704.

The previous prime is 20006623321231. The next prime is 20006623321241. The reversal of 20006623321236 is 63212332660002.

20006623321236 is a `hidden beast` number, since 2 + 0 + 0 + 0 + 6 + 623 + 3 + 2 + 1 + 23 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (20006623321231) and next prime (20006623321241).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 20006623321236.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20006623321231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3700780 + ... + 7328643.

Almost surely, 2^{20006623321236} is an apocalyptic number.

It is an amenable number.

20006623321236 is an abundant number, since it is smaller than the sum of its proper divisors (30566682781356).

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

20006623321236 is a wasteful number, since it uses less digits than its factorization.

20006623321236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11079820 (or 11079815 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 36.

Adding to 20006623321236 its reverse (63212332660002), we get a palindrome (83218955981238).

The spelling of 20006623321236 in words is "twenty trillion, six billion, six hundred twenty-three million, three hundred twenty-one thousand, two hundred thirty-six".