12140666487 has 24 divisors (see below), whose sum is σ = 18068216400. Its totient is φ = 7851811968.

The previous prime is 12140666471. The next prime is 12140666521. The reversal of 12140666487 is 78466604121.

It is not a de Polignac number, because 12140666487 - 2⁴ = 12140666471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12140666287) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100537 + ... + 185442.

It is an arithmetic number, because the mean of its divisors is an integer number (752842350).

Almost surely, 2^12140666487 is an apocalyptic number.

12140666487 is a deficient number, since it is larger than the sum of its proper divisors (5927549913).

12140666487 is a wasteful number, since it uses less digits than its factorization.

12140666487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286127 (or 286124 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 12140666487 in words is "twelve billion, one hundred forty million, six hundred sixty-six thousand, four hundred eighty-seven".