20446199792649 has 32 divisors (see below), whose sum is σ = 30486603593600. Its totient is φ = 13542889374720.

The previous prime is 20446199792647. The next prime is 20446199792701. The reversal of 20446199792649 is 94629799164402.

20446199792649 is a `hidden beast` number, since 2 + 0 + 4 + 461 + 99 + 79 + 2 + 6 + 4 + 9 = 666.

It is not a de Polignac number, because 20446199792649 - 2¹ = 20446199792647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20446199792647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 810859 + ... + 6445920.

It is an arithmetic number, because the mean of its divisors is an integer number (952706362300).

Almost surely, 2^{20446199792649} is an apocalyptic number.

It is an amenable number.

20446199792649 is a deficient number, since it is larger than the sum of its proper divisors (10040403800951).

20446199792649 is a wasteful number, since it uses less digits than its factorization.

20446199792649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7257462 (or 7257456 counting only the distinct ones).

The product of its (nonzero) digits is 423263232, while the sum is 72.

The spelling of 20446199792649 in words is "twenty trillion, four hundred forty-six billion, one hundred ninety-nine million, seven hundred ninety-two thousand, six hundred forty-nine".