12471752547 has 8 divisors (see below), whose sum is σ = 18476670480. Its totient is φ = 8314501680.

The previous prime is 12471752533. The next prime is 12471752561. The reversal of 12471752547 is 74525717421.

It is a happy number.

12471752547 is a `hidden beast` number, since 1 + 2 + 47 + 17 + 52 + 547 = 666.

It is an interprime number because it is at equal distance from previous prime (12471752533) and next prime (12471752561).

It is a de Polignac number, because none of the positive numbers 2^k-12471752547 is a prime.

It is a super-2 number, since 2×12471752547² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12471752597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230958354 + ... + 230958407.

It is an arithmetic number, because the mean of its divisors is an integer number (2309583810).

Almost surely, 2^12471752547 is an apocalyptic number.

12471752547 is a deficient number, since it is larger than the sum of its proper divisors (6004917933).

12471752547 is an equidigital number, since it uses as much as digits as its factorization.

12471752547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461916770 (or 461916764 counting only the distinct ones).

The product of its digits is 548800, while the sum is 45.

The spelling of 12471752547 in words is "twelve billion, four hundred seventy-one million, seven hundred fifty-two thousand, five hundred forty-seven".