20445133529608 has 16 divisors (see below), whose sum is σ = 38335108872060. Its totient is φ = 10222437830400.

The previous prime is 20445133529591. The next prime is 20445133529647. The reversal of 20445133529608 is 80692533154402.

It can be written as a sum of positive squares in 2 ways, for example, as 20374769600964 + 70363928644 = 4513842^2 + 265262^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15441213 + ... + 16712908.

Almost surely, 2^{20445133529608} is an apocalyptic number.

It is an amenable number.

20445133529608 is a deficient number, since it is larger than the sum of its proper divisors (17889975342452).

20445133529608 is a wasteful number, since it uses less digits than its factorization.

20445133529608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32233608 (or 32233604 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 52.

The spelling of 20445133529608 in words is "twenty trillion, four hundred forty-five billion, one hundred thirty-three million, five hundred twenty-nine thousand, six hundred eight".