20880583137 has 10 divisors (see below), whose sum is σ = 31191982338. Its totient is φ = 13920388704.

The previous prime is 20880583133. The next prime is 20880583181. The reversal of 20880583137 is 73138508802.

20880583137 is a `hidden beast` number, since 208 + 80 + 58 + 313 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20738592081 + 141991056 = 144009^2 + 11916^2 .

It is not a de Polignac number, because 20880583137 - 2² = 20880583133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20880583092 and 20880583101.

It is not an unprimeable number, because it can be changed into a prime (20880583133) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 128892408 + ... + 128892569.

Almost surely, 2^20880583137 is an apocalyptic number.

20880583137 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20880583137 is a deficient number, since it is larger than the sum of its proper divisors (10311399201).

20880583137 is an equidigital number, since it uses as much as digits as its factorization.

20880583137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257784989 (or 257784980 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 20880583137 in words is "twenty billion, eight hundred eighty million, five hundred eighty-three thousand, one hundred thirty-seven".