222345616551 has 4 divisors (see below), whose sum is σ = 296460822072. Its totient is φ = 148230411032.

The previous prime is 222345616529. The next prime is 222345616561. The reversal of 222345616551 is 155616543222.

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

It is a cyclic number.

It is not a de Polignac number, because 222345616551 - 2¹¹ = 222345614503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222345616501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37057602756 + ... + 37057602761.

It is an arithmetic number, because the mean of its divisors is an integer number (74115205518).

Almost surely, 2^222345616551 is an apocalyptic number.

222345616551 is a deficient number, since it is larger than the sum of its proper divisors (74115205521).

222345616551 is an equidigital number, since it uses as much as digits as its factorization.

222345616551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74115205520.

The product of its digits is 432000, while the sum is 42.

The spelling of 222345616551 in words is "two hundred twenty-two billion, three hundred forty-five million, six hundred sixteen thousand, five hundred fifty-one".