20080445696 has 72 divisors (see below), whose sum is σ = 42712016760. Its totient is φ = 9389113344.

The previous prime is 20080445689. The next prime is 20080445743. The reversal of 20080445696 is 69654408002.

It can be written as a sum of positive squares in 4 ways, for example, as 1999878400 + 18080567296 = 44720^2 + 134464^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 668570 + ... + 697958.

It is an arithmetic number, because the mean of its divisors is an integer number (593222455).

Almost surely, 2^20080445696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20080445696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21356008380).

20080445696 is an abundant number, since it is smaller than the sum of its proper divisors (22631571064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20080445696 is a wasteful number, since it uses less digits than its factorization.

20080445696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29579 (or 29565 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 20080445696 in words is "twenty billion, eighty million, four hundred forty-five thousand, six hundred ninety-six".