23217408547 has 8 divisors (see below), whose sum is σ = 23354781840. Its totient is φ = 23080120800.

The previous prime is 23217408523. The next prime is 23217408563. The reversal of 23217408547 is 74580471232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23217408547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23217408847) 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 in 7 ways as a sum of consecutive naturals, for example, 571233 + ... + 610525.

It is an arithmetic number, because the mean of its divisors is an integer number (2919347730).

Almost surely, 2^23217408547 is an apocalyptic number.

23217408547 is a deficient number, since it is larger than the sum of its proper divisors (137373293).

23217408547 is a wasteful number, since it uses less digits than its factorization.

23217408547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42773.

The product of its (nonzero) digits is 376320, while the sum is 43.

Adding to 23217408547 its reverse (74580471232), we get a palindrome (97797879779).

The spelling of 23217408547 in words is "twenty-three billion, two hundred seventeen million, four hundred eight thousand, five hundred forty-seven".