21846186880 has 128 divisors (see below), whose sum is σ = 60279111360. Its totient is φ = 7415808000.

The previous prime is 21846186863. The next prime is 21846186911. The reversal of 21846186880 is 8868164812.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 428340 + ... + 476620.

Almost surely, 2^21846186880 is an apocalyptic number.

21846186880 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 21846186880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30139555680).

21846186880 is an abundant number, since it is smaller than the sum of its proper divisors (38432924480).

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

21846186880 is a wasteful number, since it uses less digits than its factorization.

21846186880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48408 (or 48396 counting only the distinct ones).

The product of its (nonzero) digits is 1179648, while the sum is 52.

The spelling of 21846186880 in words is "twenty-one billion, eight hundred forty-six million, one hundred eighty-six thousand, eight hundred eighty".