21419326992 has 160 divisors (see below), whose sum is σ = 65419812864. Its totient is φ = 5909529600.

The previous prime is 21419326861. The next prime is 21419327009. The reversal of 21419326992 is 29962391412.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5424763 + ... + 5428709.

Almost surely, 2^21419326992 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 21419326992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32709906432).

21419326992 is an abundant number, since it is smaller than the sum of its proper divisors (44000485872).

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

21419326992 is a wasteful number, since it uses less digits than its factorization.

21419326992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4517 (or 4511 counting only the distinct ones).

The product of its digits is 419904, while the sum is 48.

The spelling of 21419326992 in words is "twenty-one billion, four hundred nineteen million, three hundred twenty-six thousand, nine hundred ninety-two".