21650410362 has 64 divisors (see below), whose sum is σ = 51290807040. Its totient is φ = 5963383296.

The previous prime is 21650410357. The next prime is 21650410373. The reversal of 21650410362 is 26301405612.

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, 105478 + ... + 233294.

It is an arithmetic number, because the mean of its divisors is an integer number (801418860).

Almost surely, 2^21650410362 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21650410362, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25645403520).

21650410362 is an abundant number, since it is smaller than the sum of its proper divisors (29640396678).

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

21650410362 is a wasteful number, since it uses less digits than its factorization.

21650410362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127975.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 21650410362 its reverse (26301405612), we get a palindrome (47951815974).

The spelling of 21650410362 in words is "twenty-one billion, six hundred fifty million, four hundred ten thousand, three hundred sixty-two".