20880660453 has 8 divisors (see below), whose sum is σ = 27842934816. Its totient is φ = 13919413200.

The previous prime is 20880660443. The next prime is 20880660461. The reversal of 20880660453 is 35406608802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20880660453 - 2⁹ = 20880659941 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20880660433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208018 + ... + 291603.

It is an arithmetic number, because the mean of its divisors is an integer number (3480366852).

Almost surely, 2^20880660453 is an apocalyptic number.

It is an amenable number.

20880660453 is a deficient number, since it is larger than the sum of its proper divisors (6962274363).

20880660453 is a wasteful number, since it uses less digits than its factorization.

20880660453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513555.

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 20880660453 in words is "twenty billion, eight hundred eighty million, six hundred sixty thousand, four hundred fifty-three".