22421377620 has 36 divisors (see below), whose sum is σ = 68011512660. Its totient is φ = 5979033984.

The previous prime is 22421377619. The next prime is 22421377651. The reversal of 22421377620 is 2677312422.

It is a happy number.

22421377620 is a `hidden beast` number, since 2 + 2 + 4 + 21 + 3 + 7 + 7 + 620 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 15483820356 + 6937557264 = 124434^2 + 83292^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62281425 + ... + 62281784.

It is an arithmetic number, because the mean of its divisors is an integer number (1889208685).

Almost surely, 2^22421377620 is an apocalyptic number.

22421377620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22421377620 is an abundant number, since it is smaller than the sum of its proper divisors (45590135040).

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

22421377620 is a wasteful number, since it uses less digits than its factorization.

22421377620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124563224 (or 124563219 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The spelling of 22421377620 in words is "twenty-two billion, four hundred twenty-one million, three hundred seventy-seven thousand, six hundred twenty".