20445410984 has 8 divisors (see below), whose sum is σ = 38335145610. Its totient is φ = 10222705488.

The previous prime is 20445410983. The next prime is 20445410987. The reversal of 20445410984 is 48901454402.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17312770084 + 3132640900 = 131578^2 + 55970^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (20445410983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1277838179 + ... + 1277838194.

Almost surely, 2^20445410984 is an apocalyptic number.

It is an amenable number.

20445410984 is a deficient number, since it is larger than the sum of its proper divisors (17889734626).

20445410984 is a wasteful number, since it uses less digits than its factorization.

20445410984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2555676379 (or 2555676375 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 41.

The spelling of 20445410984 in words is "twenty billion, four hundred forty-five million, four hundred ten thousand, nine hundred eighty-four".