224640320551 has 4 divisors (see below), whose sum is σ = 237854457072. Its totient is φ = 211426184032.

The previous prime is 224640320503. The next prime is 224640320561. The reversal of 224640320551 is 155023046422.

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 224640320551 - 2⁷ = 224640320423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224640320561) 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, 6607068235 + ... + 6607068268.

It is an arithmetic number, because the mean of its divisors is an integer number (59463614268).

Almost surely, 2^224640320551 is an apocalyptic number.

224640320551 is a deficient number, since it is larger than the sum of its proper divisors (13214136521).

224640320551 is a wasteful number, since it uses less digits than its factorization.

224640320551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13214136520.

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 224640320551 its reverse (155023046422), we get a palindrome (379663366973).

The spelling of 224640320551 in words is "two hundred twenty-four billion, six hundred forty million, three hundred twenty thousand, five hundred fifty-one".