20532445500 has 144 divisors (see below), whose sum is σ = 69552441504. Its totient is φ = 4693113600.

The previous prime is 20532445489. The next prime is 20532445501. The reversal of 20532445500 is 554423502.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20532445501) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 66177 + ... + 213176.

It is an arithmetic number, because the mean of its divisors is an integer number (483003066).

Almost surely, 2^20532445500 is an apocalyptic number.

20532445500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20532445500 is an abundant number, since it is smaller than the sum of its proper divisors (49019996004).

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

20532445500 is a wasteful number, since it uses less digits than its factorization.

20532445500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279389 (or 279370 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 30.

The spelling of 20532445500 in words is "twenty billion, five hundred thirty-two million, four hundred forty-five thousand, five hundred".