21614350992 has 240 divisors, whose sum is σ = 63092836800. Its totient is φ = 6365399040.

The previous prime is 21614350949. The next prime is 21614350997. The reversal of 21614350992 is 29905341612.

It is not an unprimeable number, because it can be changed into a prime (21614350997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32699142 + ... + 32699802.

It is an arithmetic number, because the mean of its divisors is an integer number (262886820).

Almost surely, 2^21614350992 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 21614350992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31546418400).

21614350992 is an abundant number, since it is smaller than the sum of its proper divisors (41478485808).

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

21614350992 is a wasteful number, since it uses less digits than its factorization.

21614350992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866 (or 847 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The spelling of 21614350992 in words is "twenty-one billion, six hundred fourteen million, three hundred fifty thousand, nine hundred ninety-two".