20010163400406 has 112 divisors (see below), whose sum is σ = 48937299933024. Its totient is φ = 6108030519552.

The previous prime is 20010163400399. The next prime is 20010163400431. The reversal of 20010163400406 is 60400436101002.

20010163400406 is a `hidden beast` number, since 20 + 0 + 1 + 0 + 1 + 634 + 0 + 0 + 4 + 0 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 20010163400406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 9992610 + ... + 11826773.

Almost surely, 2^{20010163400406} is an apocalyptic number.

20010163400406 is an abundant number, since it is smaller than the sum of its proper divisors (28927136532618).

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

20010163400406 is a wasteful number, since it uses less digits than its factorization.

20010163400406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21819457 (or 21819442 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 20010163400406 its reverse (60400436101002), we get a palindrome (80410599501408).

The spelling of 20010163400406 in words is "twenty trillion, ten billion, one hundred sixty-three million, four hundred thousand, four hundred six".