20034521500 has 192 divisors, whose sum is σ = 53372067840. Its totient is φ = 6416755200.

The previous prime is 20034521449. The next prime is 20034521527. The reversal of 20034521500 is 512543002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4852437 + ... + 4856563.

It is an arithmetic number, because the mean of its divisors is an integer number (277979520).

Almost surely, 2^20034521500 is an apocalyptic number.

20034521500 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 20034521500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26686033920).

20034521500 is an abundant number, since it is smaller than the sum of its proper divisors (33337546340).

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

20034521500 is a wasteful number, since it uses less digits than its factorization.

20034521500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4245 (or 4233 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The spelling of 20034521500 in words is "twenty billion, thirty-four million, five hundred twenty-one thousand, five hundred".