21880410336 has 384 divisors, whose sum is σ = 69543936000. Its totient is φ = 6670315008.

The previous prime is 21880410313. The next prime is 21880410341. The reversal of 21880410336 is 63301408812.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21880410336.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 98118321 + ... + 98118543.

It is an arithmetic number, because the mean of its divisors is an integer number (181104000).

Almost surely, 2^21880410336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21880410336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34771968000).

21880410336 is an abundant number, since it is smaller than the sum of its proper divisors (47663525664).

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

21880410336 is a wasteful number, since it uses less digits than its factorization.

21880410336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 429 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 21880410336 in words is "twenty-one billion, eight hundred eighty million, four hundred ten thousand, three hundred thirty-six".