20880709044 has 48 divisors (see below), whose sum is σ = 52744258560. Its totient is φ = 6391186560.

The previous prime is 20880709037. The next prime is 20880709061. The reversal of 20880709044 is 44090708802.

It is a junction number, because it is equal to n+sod(n) for n = 20880708987 and 20880709005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320599 + ... + 380190.

It is an arithmetic number, because the mean of its divisors is an integer number (1098838720).

Almost surely, 2^20880709044 is an apocalyptic number.

It is an amenable number.

20880709044 is an abundant number, since it is smaller than the sum of its proper divisors (31863549516).

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

20880709044 is a wasteful number, since it uses less digits than its factorization.

20880709044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701000 (or 700998 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The spelling of 20880709044 in words is "twenty billion, eight hundred eighty million, seven hundred nine thousand, forty-four".