12157083987 has 16 divisors (see below), whose sum is σ = 16988087040. Its totient is φ = 7718480352.

The previous prime is 12157083977. The next prime is 12157084019. The reversal of 12157083987 is 78938075121.

12157083987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12157083987 - 2⁷ = 12157083859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12157083947) 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 15 ways as a sum of consecutive naturals, for example, 368893 + ... + 400494.

It is an arithmetic number, because the mean of its divisors is an integer number (1061755440).

Almost surely, 2^12157083987 is an apocalyptic number.

12157083987 is a deficient number, since it is larger than the sum of its proper divisors (4831003053).

12157083987 is a wasteful number, since it uses less digits than its factorization.

12157083987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769642.

The product of its (nonzero) digits is 846720, while the sum is 51.

The spelling of 12157083987 in words is "twelve billion, one hundred fifty-seven million, eighty-three thousand, nine hundred eighty-seven".