20532404500 has 96 divisors (see below), whose sum is σ = 47732944896. Its totient is φ = 7688768000.

The previous prime is 20532404471. The next prime is 20532404507. The reversal of 20532404500 is 540423502.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20532404507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1617177 + ... + 1629823.

It is an arithmetic number, because the mean of its divisors is an integer number (497218176).

Almost surely, 2^20532404500 is an apocalyptic number.

20532404500 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 20532404500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23866472448).

20532404500 is an abundant number, since it is smaller than the sum of its proper divisors (27200540396).

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

20532404500 is a wasteful number, since it uses less digits than its factorization.

20532404500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12874 (or 12862 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The spelling of 20532404500 in words is "twenty billion, five hundred thirty-two million, four hundred four thousand, five hundred".