12534577671 has 48 divisors (see below), whose sum is σ = 21350649600. Its totient is φ = 6401028480.

The previous prime is 12534577631. The next prime is 12534577681. The reversal of 12534577671 is 17677543521.

It is not a de Polignac number, because 12534577671 - 2⁶ = 12534577607 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12534577671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12534577621) 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 47 ways as a sum of consecutive naturals, for example, 108115 + ... + 191723.

It is an arithmetic number, because the mean of its divisors is an integer number (444805200).

Almost surely, 2^12534577671 is an apocalyptic number.

12534577671 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12534577671 is a deficient number, since it is larger than the sum of its proper divisors (8816071929).

12534577671 is a wasteful number, since it uses less digits than its factorization.

12534577671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83700 (or 83689 counting only the distinct ones).

The product of its digits is 1234800, while the sum is 48.

The spelling of 12534577671 in words is "twelve billion, five hundred thirty-four million, five hundred seventy-seven thousand, six hundred seventy-one".