12187948541 has 16 divisors (see below), whose sum is σ = 12501112320. Its totient is φ = 11878666800.

The previous prime is 12187948511. The next prime is 12187948547. The reversal of 12187948541 is 14584978121.

It is a cyclic number.

It is not a de Polignac number, because 12187948541 - 2⁶ = 12187948477 is a prime.

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 12187948541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12187948547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6083846 + ... + 6085848.

It is an arithmetic number, because the mean of its divisors is an integer number (781319520).

Almost surely, 2^12187948541 is an apocalyptic number.

It is an amenable number.

12187948541 is a deficient number, since it is larger than the sum of its proper divisors (313163779).

12187948541 is a wasteful number, since it uses less digits than its factorization.

12187948541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2896.

The product of its digits is 645120, while the sum is 50.

The spelling of 12187948541 in words is "twelve billion, one hundred eighty-seven million, nine hundred forty-eight thousand, five hundred forty-one".