20473606899730 has 8 divisors (see below), whose sum is σ = 36852492419532. Its totient is φ = 8189442759888.

The previous prime is 20473606899709. The next prime is 20473606899769. The reversal of 20473606899730 is 3799860637402.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20473606899729 + 1 = 4524777^2 + 1^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1023680344977 + ... + 1023680344996.

Almost surely, 2^{20473606899730} is an apocalyptic number.

20473606899730 is a deficient number, since it is larger than the sum of its proper divisors (16378885519802).

20473606899730 is a wasteful number, since it uses less digits than its factorization.

20473606899730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047360689980.

The product of its (nonzero) digits is 82301184, while the sum is 64.

The spelling of 20473606899730 in words is "twenty trillion, four hundred seventy-three billion, six hundred six million, eight hundred ninety-nine thousand, seven hundred thirty".