20734411100 has 72 divisors (see below), whose sum is σ = 49068317760. Its totient is φ = 7558836480.

The previous prime is 20734411091. The next prime is 20734411109. The reversal of 20734411100 is 111443702.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20734411091) and next prime (20734411109).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20734411109) 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 23 ways as a sum of consecutive naturals, for example, 1754 + ... + 203646.

Almost surely, 2^20734411100 is an apocalyptic number.

20734411100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20734411100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24534158880).

20734411100 is an abundant number, since it is smaller than the sum of its proper divisors (28333906660).

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

20734411100 is a wasteful number, since it uses less digits than its factorization.

20734411100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201999 (or 201992 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 20734411100 its reverse (111443702), we get a palindrome (20845854802).

The spelling of 20734411100 in words is "twenty billion, seven hundred thirty-four million, four hundred eleven thousand, one hundred".