226660624591 has 4 divisors (see below), whose sum is σ = 226787749552. Its totient is φ = 226533499632.

The previous prime is 226660624579. The next prime is 226660624609. The reversal of 226660624591 is 195426066622.

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 226660624591 - 2¹¹ = 226660622543 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 (226660624291) 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, 63559806 + ... + 63563371.

It is an arithmetic number, because the mean of its divisors is an integer number (56696937388).

Almost surely, 2^226660624591 is an apocalyptic number.

226660624591 is a deficient number, since it is larger than the sum of its proper divisors (127124961).

226660624591 is a wasteful number, since it uses less digits than its factorization.

226660624591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127124960.

The product of its (nonzero) digits is 1866240, while the sum is 49.

The spelling of 226660624591 in words is "two hundred twenty-six billion, six hundred sixty million, six hundred twenty-four thousand, five hundred ninety-one".