22255661436 has 12 divisors (see below), whose sum is σ = 51929876712. Its totient is φ = 7418553808.

The previous prime is 22255661387. The next prime is 22255661471. The reversal of 22255661436 is 63416655222.

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

It is a congruent number.

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, 927319215 + ... + 927319238.

It is an arithmetic number, because the mean of its divisors is an integer number (4327489726).

Almost surely, 2^22255661436 is an apocalyptic number.

It is an amenable number.

22255661436 is an abundant number, since it is smaller than the sum of its proper divisors (29674215276).

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

22255661436 is a wasteful number, since it uses less digits than its factorization.

22255661436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1854638460 (or 1854638458 counting only the distinct ones).

The product of its digits is 518400, while the sum is 42.

The spelling of 22255661436 in words is "twenty-two billion, two hundred fifty-five million, six hundred sixty-one thousand, four hundred thirty-six".