23515555222 has 4 divisors (see below), whose sum is σ = 35273332836. Its totient is φ = 11757777610.

The previous prime is 23515555187. The next prime is 23515555223. The reversal of 23515555222 is 22255551532.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23515555223) by changing a digit.

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 as a sum of consecutive naturals, namely, 5878888804 + ... + 5878888807.

It is an arithmetic number, because the mean of its divisors is an integer number (8818333209).

Almost surely, 2^23515555222 is an apocalyptic number.

23515555222 is a deficient number, since it is larger than the sum of its proper divisors (11757777614).

23515555222 is a wasteful number, since it uses less digits than its factorization.

23515555222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11757777613.

The product of its digits is 150000, while the sum is 37.

The spelling of 23515555222 in words is "twenty-three billion, five hundred fifteen million, five hundred fifty-five thousand, two hundred twenty-two".