20134503100 has 72 divisors (see below), whose sum is σ = 45237465728. Its totient is φ = 7770470400.

The previous prime is 20134503097. The next prime is 20134503133. The reversal of 20134503100 is 130543102.

It is a super-2 number, since 2×20134503100² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1035064 + ... + 1054336.

Almost surely, 2^20134503100 is an apocalyptic number.

20134503100 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 20134503100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22618732864).

20134503100 is an abundant number, since it is smaller than the sum of its proper divisors (25102962628).

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

20134503100 is a wasteful number, since it uses less digits than its factorization.

20134503100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19655 (or 19648 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The spelling of 20134503100 in words is "twenty billion, one hundred thirty-four million, five hundred three thousand, one hundred".