21054654200 has 48 divisors (see below), whose sum is σ = 48985425000. Its totient is φ = 8416123520.

The previous prime is 21054654199. The next prime is 21054654209. The reversal of 21054654200 is 245645012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21054654209) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 264686 + ... + 334914.

Almost surely, 2^21054654200 is an apocalyptic number.

21054654200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21054654200 is an abundant number, since it is smaller than the sum of its proper divisors (27930770800).

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

21054654200 is a wasteful number, since it uses less digits than its factorization.

21054654200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71744 (or 71735 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The spelling of 21054654200 in words is "twenty-one billion, fifty-four million, six hundred fifty-four thousand, two hundred".