22385316820 has 24 divisors (see below), whose sum is σ = 47022885504. Its totient is φ = 8951513376.

The previous prime is 22385316803. The next prime is 22385316823. The reversal of 22385316820 is 2861358322.

It is a super-2 number, since 2×22385316820² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22385316823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92344 + ... + 230863.

It is an arithmetic number, because the mean of its divisors is an integer number (1959286896).

Almost surely, 2^22385316820 is an apocalyptic number.

22385316820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22385316820 is an abundant number, since it is smaller than the sum of its proper divisors (24637568684).

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

22385316820 is a wasteful number, since it uses less digits than its factorization.

22385316820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326679 (or 326677 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 22385316820 in words is "twenty-two billion, three hundred eighty-five million, three hundred sixteen thousand, eight hundred twenty".