23524517947 has 6 divisors (see below), whose sum is σ = 27365255628. Its totient is φ = 20163872484.

The previous prime is 23524517923. The next prime is 23524517977. The reversal of 23524517947 is 74971542532.

It is a de Polignac number, because none of the positive numbers 2^k-23524517947 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 480092203 = 23524517947 / (2 + 3 + 5 + 2 + 4 + 5 + 1 + 7 + 9 + 4 + 7).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23524517947.

It is not an unprimeable number, because it can be changed into a prime (23524517977) 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 5 ways as a sum of consecutive naturals, for example, 240046053 + ... + 240046150.

It is an arithmetic number, because the mean of its divisors is an integer number (4560875938).

Almost surely, 2^23524517947 is an apocalyptic number.

23524517947 is a deficient number, since it is larger than the sum of its proper divisors (3840737681).

23524517947 is an equidigital number, since it uses as much as digits as its factorization.

23524517947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480092217 (or 480092210 counting only the distinct ones).

The product of its digits is 2116800, while the sum is 49.

The spelling of 23524517947 in words is "twenty-three billion, five hundred twenty-four million, five hundred seventeen thousand, nine hundred forty-seven".