20415650164444 has 24 divisors (see below), whose sum is σ = 36096687645200. Its totient is φ = 10102316530176.

The previous prime is 20415650164339. The next prime is 20415650164477. The reversal of 20415650164444 is 44446105651402.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20415650164394 and 20415650164403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14046382 + ... + 15431530.

Almost surely, 2^{20415650164444} is an apocalyptic number.

It is an amenable number.

20415650164444 is a deficient number, since it is larger than the sum of its proper divisors (15681037480756).

20415650164444 is a wasteful number, since it uses less digits than its factorization.

20415650164444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423237 (or 1423235 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 46.

The spelling of 20415650164444 in words is "twenty trillion, four hundred fifteen billion, six hundred fifty million, one hundred sixty-four thousand, four hundred forty-four".