21746938300 has 72 divisors (see below), whose sum is σ = 50303724800. Its totient is φ = 8136573120.

The previous prime is 21746938249. The next prime is 21746938331. The reversal of 21746938300 is 383964712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77659 + ... + 222541.

Almost surely, 2^21746938300 is an apocalyptic number.

21746938300 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 21746938300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25151862400).

21746938300 is an abundant number, since it is smaller than the sum of its proper divisors (28556786500).

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

21746938300 is a wasteful number, since it uses less digits than its factorization.

21746938300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144995 (or 144988 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 21746938300 in words is "twenty-one billion, seven hundred forty-six million, nine hundred thirty-eight thousand, three hundred".