21714739200 has 1680 divisors, whose sum is σ = 106190149824. Its totient is φ = 4246732800.

The previous prime is 21714739181. The next prime is 21714739259. The reversal of 21714739200 is 293741712.

It is a tau number, because it is divible by the number of its divisors (1680).

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

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 1277337592 + ... + 1277337608.

Almost surely, 2^21714739200 is an apocalyptic number.

21714739200 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 21714739200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53095074912).

21714739200 is an abundant number, since it is smaller than the sum of its proper divisors (84475410624).

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

21714739200 is a wasteful number, since it uses less digits than its factorization.

21714739200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83 (or 45 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The spelling of 21714739200 in words is "twenty-one billion, seven hundred fourteen million, seven hundred thirty-nine thousand, two hundred".