20907110680 has 32 divisors (see below), whose sum is σ = 49808118240. Its totient is φ = 7870912000.

The previous prime is 20907110611. The next prime is 20907110683. The reversal of 20907110680 is 8601170902.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20907110683) 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, 15372196 + ... + 15373555.

It is an arithmetic number, because the mean of its divisors is an integer number (1556503695).

Almost surely, 2^20907110680 is an apocalyptic number.

20907110680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20907110680 is an abundant number, since it is smaller than the sum of its proper divisors (28901007560).

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

20907110680 is a wasteful number, since it uses less digits than its factorization.

20907110680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30745779 (or 30745775 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 34.

The spelling of 20907110680 in words is "twenty billion, nine hundred seven million, one hundred ten thousand, six hundred eighty".