22621405156 has 12 divisors (see below), whose sum is σ = 45242810368. Its totient is φ = 9694887912.

The previous prime is 22621405133. The next prime is 22621405207. The reversal of 22621405156 is 65150412622.

22621405156 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 403953636 + ... + 403953691.

Almost surely, 2^22621405156 is an apocalyptic number.

It is an amenable number.

22621405156 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22621405156 is a wasteful number, since it uses less digits than its factorization.

22621405156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807907338 (or 807907336 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

Adding to 22621405156 its reverse (65150412622), we get a palindrome (87771817778).

The spelling of 22621405156 in words is "twenty-two billion, six hundred twenty-one million, four hundred five thousand, one hundred fifty-six".