20473606899728 has 40 divisors (see below), whose sum is σ = 40260930760512. Its totient is φ = 10083698875008.

The previous prime is 20473606899709. The next prime is 20473606899769. The reversal of 20473606899728 is 82799860637402.

It is a Cunningham number, because it is equal to 4524777²-1.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35915426 + ... + 36481022.

Almost surely, 2^{20473606899728} is an apocalyptic number.

It is an amenable number.

20473606899728 is a deficient number, since it is larger than the sum of its proper divisors (19787323860784).

20473606899728 is a wasteful number, since it uses less digits than its factorization.

20473606899728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599439 (or 599433 counting only the distinct ones).

The product of its (nonzero) digits is 438939648, while the sum is 71.

The spelling of 20473606899728 in words is "twenty trillion, four hundred seventy-three billion, six hundred six million, eight hundred ninety-nine thousand, seven hundred twenty-eight".