22699400172 has 12 divisors (see below), whose sum is σ = 52965267096. Its totient is φ = 7566466720.

The previous prime is 22699400159. The next prime is 22699400197. The reversal of 22699400172 is 27100499622.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 945808329 + ... + 945808352.

It is an arithmetic number, because the mean of its divisors is an integer number (4413772258).

Almost surely, 2^22699400172 is an apocalyptic number.

It is an amenable number.

22699400172 is an abundant number, since it is smaller than the sum of its proper divisors (30265866924).

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

22699400172 is a wasteful number, since it uses less digits than its factorization.

22699400172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1891616688 (or 1891616686 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

Adding to 22699400172 its reverse (27100499622), we get a palindrome (49799899794).

The spelling of 22699400172 in words is "twenty-two billion, six hundred ninety-nine million, four hundred thousand, one hundred seventy-two".