23218185956 has 24 divisors (see below), whose sum is σ = 46656461376. Its totient is φ = 9903489120.

The previous prime is 23218185941. The next prime is 23218185961. The reversal of 23218185956 is 65958181232.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1959071 + ... + 1970886.

It is an arithmetic number, because the mean of its divisors is an integer number (1944019224).

Almost surely, 2^23218185956 is an apocalyptic number.

It is an amenable number.

23218185956 is an abundant number, since it is smaller than the sum of its proper divisors (23438275420).

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

23218185956 is a wasteful number, since it uses less digits than its factorization.

23218185956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3930179 (or 3930177 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 50.

The spelling of 23218185956 in words is "twenty-three billion, two hundred eighteen million, one hundred eighty-five thousand, nine hundred fifty-six".