22621444740 has 72 divisors (see below), whose sum is σ = 72654767640. Its totient is φ = 5677538304.

The previous prime is 22621444739. The next prime is 22621444823. The reversal of 22621444740 is 4744412622.

22621444740 is a `hidden beast` number, since 22 + 621 + 4 + 4 + 4 + 7 + 4 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3992470596 + 18628974144 = 63186^2 + 136488^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 22621444695 and 22621444704.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3693255 + ... + 3699374.

It is an arithmetic number, because the mean of its divisors is an integer number (1009093995).

Almost surely, 2^22621444740 is an apocalyptic number.

22621444740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22621444740 is an abundant number, since it is smaller than the sum of its proper divisors (50033322900).

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

22621444740 is a wasteful number, since it uses less digits than its factorization.

22621444740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7392661 (or 7392656 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 36.

The spelling of 22621444740 in words is "twenty-two billion, six hundred twenty-one million, four hundred forty-four thousand, seven hundred forty".