20169846741645 has 24 divisors (see below), whose sum is σ = 34978557120000. Its totient is φ = 10751870231136.

The previous prime is 20169846741637. The next prime is 20169846741743. The reversal of 20169846741645 is 54614764896102.

20169846741645 is a `hidden beast` number, since 2 + 0 + 1 + 6 + 9 + 8 + 467 + 4 + 164 + 5 = 666.

It is not a de Polignac number, because 20169846741645 - 2³ = 20169846741637 is a prime.

It is a super-3 number, since 3×20169846741645³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 112020805 + ... + 112200714.

It is an arithmetic number, because the mean of its divisors is an integer number (1457439880000).

Almost surely, 2^{20169846741645} is an apocalyptic number.

It is an amenable number.

20169846741645 is a deficient number, since it is larger than the sum of its proper divisors (14808710378355).

20169846741645 is a wasteful number, since it uses less digits than its factorization.

20169846741645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224223529 (or 224223526 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 63.

The spelling of 20169846741645 in words is "twenty trillion, one hundred sixty-nine billion, eight hundred forty-six million, seven hundred forty-one thousand, six hundred forty-five".