20880580845 has 8 divisors (see below), whose sum is σ = 33408929376. Its totient is φ = 11136309776.

The previous prime is 20880580823. The next prime is 20880580907. The reversal of 20880580845 is 54808508802.

It is a happy number.

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 20880580845 - 2¹⁶ = 20880515309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20880580794 and 20880580803.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 696019347 + ... + 696019376.

It is an arithmetic number, because the mean of its divisors is an integer number (4176116172).

Almost surely, 2^20880580845 is an apocalyptic number.

It is an amenable number.

20880580845 is a deficient number, since it is larger than the sum of its proper divisors (12528348531).

20880580845 is a wasteful number, since it uses less digits than its factorization.

20880580845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392038731.

The product of its (nonzero) digits is 819200, while the sum is 48.

The spelling of 20880580845 in words is "twenty billion, eight hundred eighty million, five hundred eighty thousand, eight hundred forty-five".