22006651226640 has 160 divisors (see below), whose sum is σ = 69006038568960. Its totient is φ = 5801211021312.

The previous prime is 22006651226639. The next prime is 22006651226663. The reversal of 22006651226640 is 4662215660022.

It is a junction number, because it is equal to n+sod(n) for n = 22006651226592 and 22006651226601.

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, 7139706 + ... + 9746214.

It is an arithmetic number, because the mean of its divisors is an integer number (431287741056).

Almost surely, 2^{22006651226640} is an apocalyptic number.

22006651226640 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 22006651226640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34503019284480).

22006651226640 is an abundant number, since it is smaller than the sum of its proper divisors (46999387342320).

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

22006651226640 is a wasteful number, since it uses less digits than its factorization.

22006651226640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2606929 (or 2606923 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 42.

Adding to 22006651226640 its reverse (4662215660022), we get a palindrome (26668866886662).

The spelling of 22006651226640 in words is "twenty-two trillion, six billion, six hundred fifty-one million, two hundred twenty-six thousand, six hundred forty".