20466066402 has 96 divisors (see below), whose sum is σ = 47256887808. Its totient is φ = 6387752448.

The previous prime is 20466066347. The next prime is 20466066407.

20466066402 is a `hidden beast` number, since 2 + 0 + 4 + 6 + 6 + 0 + 6 + 640 + 2 = 666.

20466066402 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (20466066407) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4137943 + ... + 4142885.

It is an arithmetic number, because the mean of its divisors is an integer number (492259248).

Almost surely, 2^20466066402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20466066402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23628443904).

20466066402 is an abundant number, since it is smaller than the sum of its proper divisors (26790821406).

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

20466066402 is a wasteful number, since it uses less digits than its factorization.

20466066402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5184 (or 5181 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The spelling of 20466066402 in words is "twenty billion, four hundred sixty-six million, sixty-six thousand, four hundred two".