203644424100 has 144 divisors (see below), whose sum is σ = 634962609792. Its totient is φ = 50094090240.

The previous prime is 203644424083. The next prime is 203644424143. The reversal of 203644424100 is 1424446302.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6039889 + ... + 6073511.

It is an arithmetic number, because the mean of its divisors is an integer number (4409462568).

Almost surely, 2^203644424100 is an apocalyptic number.

203644424100 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 203644424100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317481304896).

203644424100 is an abundant number, since it is smaller than the sum of its proper divisors (431318185692).

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

203644424100 is a wasteful number, since it uses less digits than its factorization.

203644424100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35206 (or 35199 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

The spelling of 203644424100 in words is "two hundred three billion, six hundred forty-four million, four hundred twenty-four thousand, one hundred".