20105880634674 has 24 divisors (see below), whose sum is σ = 43574214460140. Its totient is φ = 6700195121568.

The previous prime is 20105880634663. The next prime is 20105880634699. The reversal of 20105880634674 is 47643608850102.

It is a happy number.

20105880634674 is a `hidden beast` number, since 2 + 0 + 10 + 588 + 0 + 6 + 3 + 46 + 7 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 19619646371649 + 486234263025 = 4429407^2 + 697305^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20105880634674.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 147020589 + ... + 147157280.

Almost surely, 2^{20105880634674} is an apocalyptic number.

20105880634674 is an abundant number, since it is smaller than the sum of its proper divisors (23468333825466).

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

20105880634674 is a wasteful number, since it uses less digits than its factorization.

20105880634674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294181674 (or 294181671 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 54.

The spelling of 20105880634674 in words is "twenty trillion, one hundred five billion, eight hundred eighty million, six hundred thirty-four thousand, six hundred seventy-four".