12541691808 has 48 divisors (see below), whose sum is σ = 36579936960. Its totient is φ = 4180563648.

The previous prime is 12541691803. The next prime is 12541691819. The reversal of 12541691808 is 80819614521.

It is a happy number.

12541691808 is a `hidden beast` number, since 12 + 541 + 6 + 91 + 8 + 0 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (12541691801) 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, 7257060 + ... + 7258787.

It is an arithmetic number, because the mean of its divisors is an integer number (762082020).

Almost surely, 2^12541691808 is an apocalyptic number.

12541691808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12541691808 is an abundant number, since it is smaller than the sum of its proper divisors (24038245152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12541691808 is a wasteful number, since it uses less digits than its factorization.

12541691808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14515866 (or 14515852 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The spelling of 12541691808 in words is "twelve billion, five hundred forty-one million, six hundred ninety-one thousand, eight hundred eight".