20005106735745 has 24 divisors (see below), whose sum is σ = 34831013957376. Its totient is φ = 10621545454368.

The previous prime is 20005106735737. The next prime is 20005106735759. The reversal of 20005106735745 is 54753760150002.

It is a happy number.

20005106735745 is a `hidden beast` number, since 2 + 0 + 0 + 0 + 5 + 1 + 0 + 6 + 73 + 574 + 5 = 666.

It is not a de Polignac number, because 20005106735745 - 2³ = 20005106735737 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 20005106735745.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 996756619 + ... + 996776688.

It is an arithmetic number, because the mean of its divisors is an integer number (1451292248224).

Almost surely, 2^{20005106735745} is an apocalyptic number.

It is an amenable number.

20005106735745 is a deficient number, since it is larger than the sum of its proper divisors (14825907221631).

20005106735745 is a wasteful number, since it uses less digits than its factorization.

20005106735745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993533541 (or 1993533538 counting only the distinct ones).

The product of its (nonzero) digits is 882000, while the sum is 45.

Adding to 20005106735745 its reverse (54753760150002), we get a palindrome (74758866885747).

The spelling of 20005106735745 in words is "twenty trillion, five billion, one hundred six million, seven hundred thirty-five thousand, seven hundred forty-five".