21316703518000 has 640 divisors, whose sum is σ = 60481618928640. Its totient is φ = 7192120320000.

The previous prime is 21316703517997. The next prime is 21316703518079. The reversal of 21316703518000 is 81530761312.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1752579919 + ... + 1752592081.

It is an arithmetic number, because the mean of its divisors is an integer number (94502529576).

Almost surely, 2^{21316703518000} is an apocalyptic number.

21316703518000 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 21316703518000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30240809464320).

21316703518000 is an abundant number, since it is smaller than the sum of its proper divisors (39164915410640).

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

21316703518000 is a wasteful number, since it uses less digits than its factorization.

21316703518000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12334 (or 12318 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 21316703518000 in words is "twenty-one trillion, three hundred sixteen billion, seven hundred three million, five hundred eighteen thousand".