20445935969 has 8 divisors (see below), whose sum is σ = 21027631680. Its totient is φ = 19869068016.

The previous prime is 20445935953. The next prime is 20445935977. The reversal of 20445935969 is 96953954402.

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

It is a cyclic number.

It is not a de Polignac number, because 20445935969 - 2⁴ = 20445935953 is a prime.

It is a super-2 number, since 2×20445935969² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20445935369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1198349 + ... + 1215290.

It is an arithmetic number, because the mean of its divisors is an integer number (2628453960).

Almost surely, 2^20445935969 is an apocalyptic number.

It is an amenable number.

20445935969 is a deficient number, since it is larger than the sum of its proper divisors (581695711).

20445935969 is a wasteful number, since it uses less digits than its factorization.

20445935969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2413879.

The product of its (nonzero) digits is 10497600, while the sum is 56.

The spelling of 20445935969 in words is "twenty billion, four hundred forty-five million, nine hundred thirty-five thousand, nine hundred sixty-nine".