20043954900 has 144 divisors (see below), whose sum is σ = 67239446400. Its totient is φ = 5112645120.

The previous prime is 20043954883. The next prime is 20043954913. The reversal of 20043954900 is 945934002.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 99285 + ... + 223484.

It is an arithmetic number, because the mean of its divisors is an integer number (466940600).

Almost surely, 2^20043954900 is an apocalyptic number.

20043954900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20043954900 is an abundant number, since it is smaller than the sum of its proper divisors (47195491500).

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

20043954900 is a wasteful number, since it uses less digits than its factorization.

20043954900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322815 (or 322802 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 20043954900 in words is "twenty billion, forty-three million, nine hundred fifty-four thousand, nine hundred".