23187528747647 has 8 divisors (see below), whose sum is σ = 25295522365440. Its totient is φ = 21079541206360.

The previous prime is 23187528747611. The next prime is 23187528747707. The reversal of 23187528747647 is 74674782578132.

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

It is a cyclic number.

It is not a de Polignac number, because 23187528747647 - 2¹⁰ = 23187528746623 is a prime.

It is a super-2 number, since 2×23187528747647² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23187528747547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10810754 + ... + 12776832.

It is an arithmetic number, because the mean of its divisors is an integer number (3161940295680).

Almost surely, 2^{23187528747647} is an apocalyptic number.

23187528747647 is a deficient number, since it is larger than the sum of its proper divisors (2107993617793).

23187528747647 is a wasteful number, since it uses less digits than its factorization.

23187528747647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3038253.

The product of its digits is 885104640, while the sum is 71.

The spelling of 23187528747647 in words is "twenty-three trillion, one hundred eighty-seven billion, five hundred twenty-eight million, seven hundred forty-seven thousand, six hundred forty-seven".