20880335169 has 16 divisors (see below), whose sum is σ = 31931696640. Its totient is φ = 13471183440.

The previous prime is 20880335129. The next prime is 20880335227. The reversal of 20880335169 is 96153308802.

It is a happy number.

20880335169 is a `hidden beast` number, since 20 + 8 + 80 + 33 + 516 + 9 = 666.

It is not a de Polignac number, because 20880335169 - 2⁸ = 20880334913 is a prime.

It is a super-2 number, since 2×20880335169² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20880335129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12472482 + ... + 12474155.

It is an arithmetic number, because the mean of its divisors is an integer number (1995731040).

Almost surely, 2^20880335169 is an apocalyptic number.

It is an amenable number.

20880335169 is a deficient number, since it is larger than the sum of its proper divisors (11051361471).

20880335169 is a wasteful number, since it uses less digits than its factorization.

20880335169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24946677 (or 24946671 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 20880335169 in words is "twenty billion, eight hundred eighty million, three hundred thirty-five thousand, one hundred sixty-nine".