21605006114050 has 96 divisors (see below), whose sum is σ = 43368452455680. Its totient is φ = 7981782220800.

The previous prime is 21605006114033. The next prime is 21605006114051. The reversal of 21605006114050 is 5041160050612.

It is not an unprimeable number, because it can be changed into a prime (21605006114051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10533660 + ... + 12416440.

It is an arithmetic number, because the mean of its divisors is an integer number (451754713080).

Almost surely, 2^{21605006114050} is an apocalyptic number.

21605006114050 is an abundant number, since it is smaller than the sum of its proper divisors (21763446341630).

21605006114050 is a wasteful number, since it uses less digits than its factorization.

21605006114050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1883116 (or 1883111 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 21605006114050 its reverse (5041160050612), we get a palindrome (26646166164662).

The spelling of 21605006114050 in words is "twenty-one trillion, six hundred five billion, six million, one hundred fourteen thousand, fifty".