22404257064 has 144 divisors (see below), whose sum is σ = 71436193920. Its totient is φ = 6324010560.

The previous prime is 22404257033. The next prime is 22404257093. The reversal of 22404257064 is 46075240422.

22404257064 is a `hidden beast` number, since 2 + 2 + 40 + 42 + 570 + 6 + 4 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 254569 + ... + 331079.

It is an arithmetic number, because the mean of its divisors is an integer number (496084680).

Almost surely, 2^22404257064 is an apocalyptic number.

22404257064 is a gapful number since it is divisible by the number (24) 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 22404257064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35718096960).

22404257064 is an abundant number, since it is smaller than the sum of its proper divisors (49031936856).

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

22404257064 is a wasteful number, since it uses less digits than its factorization.

22404257064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76620 (or 76606 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 36.

Adding to 22404257064 its reverse (46075240422), we get a palindrome (68479497486).

The spelling of 22404257064 in words is "twenty-two billion, four hundred four million, two hundred fifty-seven thousand, sixty-four".