12541691542 has 8 divisors (see below), whose sum is σ = 19093321656. Its totient is φ = 6177250992.

The previous prime is 12541691507. The next prime is 12541691543. The reversal of 12541691542 is 24519614521.

12541691542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 12541691495 and 12541691504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12541691543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46797223 + ... + 46797490.

It is an arithmetic number, because the mean of its divisors is an integer number (2386665207).

Almost surely, 2^12541691542 is an apocalyptic number.

12541691542 is a deficient number, since it is larger than the sum of its proper divisors (6551630114).

12541691542 is an equidigital number, since it uses as much as digits as its factorization.

12541691542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93594782.

The product of its digits is 86400, while the sum is 40.

The spelling of 12541691542 in words is "twelve billion, five hundred forty-one million, six hundred ninety-one thousand, five hundred forty-two".