20880576717 has 32 divisors (see below), whose sum is σ = 37380618240. Its totient is φ = 10012662720.

The previous prime is 20880576671. The next prime is 20880576763. The reversal of 20880576717 is 71767508802.

It is an interprime number because it is at equal distance from previous prime (20880576671) and next prime (20880576763).

It is not a de Polignac number, because 20880576717 - 2¹⁰ = 20880575693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20880576717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20880576767) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3473617 + ... + 3479622.

It is an arithmetic number, because the mean of its divisors is an integer number (1168144320).

Almost surely, 2^20880576717 is an apocalyptic number.

It is an amenable number.

20880576717 is a deficient number, since it is larger than the sum of its proper divisors (16500041523).

20880576717 is a wasteful number, since it uses less digits than its factorization.

20880576717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6953273.

The product of its (nonzero) digits is 1317120, while the sum is 51.

The spelling of 20880576717 in words is "twenty billion, eight hundred eighty million, five hundred seventy-six thousand, seven hundred seventeen".