20880660054 has 16 divisors (see below), whose sum is σ = 42549270192. Its totient is φ = 6828895008.

The previous prime is 20880660019. The next prime is 20880660077. The reversal of 20880660054 is 45006608802.

It is a super-2 number, since 2×20880660054² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20880659994 and 20880660021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32830909 + ... + 32831544.

It is an arithmetic number, because the mean of its divisors is an integer number (2659329387).

Almost surely, 2^20880660054 is an apocalyptic number.

20880660054 is an abundant number, since it is smaller than the sum of its proper divisors (21668610138).

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

20880660054 is a wasteful number, since it uses less digits than its factorization.

20880660054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65662511.

The product of its (nonzero) digits is 92160, while the sum is 39.

The spelling of 20880660054 in words is "twenty billion, eight hundred eighty million, six hundred sixty thousand, fifty-four".