22421606740 has 48 divisors (see below), whose sum is σ = 50753702160. Its totient is φ = 8271175680.

The previous prime is 22421606723. The next prime is 22421606813. The reversal of 22421606740 is 4760612422.

It can be written as a sum of positive squares in 8 ways, for example, as 9479359044 + 12942247696 = 97362^2 + 113764^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22421606696 and 22421606705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249460 + ... + 327220.

It is an arithmetic number, because the mean of its divisors is an integer number (1057368795).

Almost surely, 2^22421606740 is an apocalyptic number.

22421606740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22421606740 is an abundant number, since it is smaller than the sum of its proper divisors (28332095420).

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

22421606740 is a wasteful number, since it uses less digits than its factorization.

22421606740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78892 (or 78890 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The spelling of 22421606740 in words is "twenty-two billion, four hundred twenty-one million, six hundred six thousand, seven hundred forty".