422191336644 has 336 divisors, whose sum is σ = 1394834345856. Its totient is φ = 108568512000.

The previous prime is 422191336631. The next prime is 422191336691. The reversal of 422191336644 is 446633191224.

422191336644 is a `hidden beast` number, since 4 + 221 + 91 + 336 + 6 + 4 + 4 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 422191336644.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 22668424 + ... + 22687040.

It is an arithmetic number, because the mean of its divisors is an integer number (4151292696).

Almost surely, 2^422191336644 is an apocalyptic number.

422191336644 is a gapful number since it is divisible by the number (44) 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 422191336644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (697417172928).

422191336644 is an abundant number, since it is smaller than the sum of its proper divisors (972643009212).

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

422191336644 is a wasteful number, since it uses less digits than its factorization.

422191336644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18758 (or 18741 counting only the distinct ones).

The product of its digits is 746496, while the sum is 45.

The spelling of 422191336644 in words is "four hundred twenty-two billion, one hundred ninety-one million, three hundred thirty-six thousand, six hundred forty-four".