20005106736042 has 12 divisors (see below), whose sum is σ = 43344397928130. Its totient is φ = 6668368912008.

The previous prime is 20005106735987. The next prime is 20005106736049. The reversal of 20005106736042 is 24063760150002.

20005106736042 is a `hidden beast` number, since 20 + 0 + 0 + 510 + 67 + 3 + 60 + 4 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 15291470605761 + 4713636130281 = 3910431^2 + 2171091^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20005106735988 and 20005106736006.

It is not an unprimeable number, because it can be changed into a prime (20005106736049) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 555697409317 + ... + 555697409352.

Almost surely, 2^{20005106736042} is an apocalyptic number.

20005106736042 is an abundant number, since it is smaller than the sum of its proper divisors (23339291192088).

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

20005106736042 is a wasteful number, since it uses less digits than its factorization.

20005106736042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111394818677 (or 1111394818674 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

Adding to 20005106736042 its reverse (24063760150002), we get a palindrome (44068866886044).

The spelling of 20005106736042 in words is "twenty trillion, five billion, one hundred six million, seven hundred thirty-six thousand, forty-two".