12130434787 has 4 divisors (see below), whose sum is σ = 12132837640. Its totient is φ = 12128031936.

The previous prime is 12130434763. The next prime is 12130434791. The reversal of 12130434787 is 78743403121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78743403121 = 61 ⋅1290875461.

It is a cyclic number.

It is not a de Polignac number, because 12130434787 - 2¹⁵ = 12130402019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12130434707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1193838 + ... + 1203955.

It is an arithmetic number, because the mean of its divisors is an integer number (3033209410).

Almost surely, 2^12130434787 is an apocalyptic number.

12130434787 is a deficient number, since it is larger than the sum of its proper divisors (2402853).

12130434787 is an equidigital number, since it uses as much as digits as its factorization.

12130434787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2402852.

The product of its (nonzero) digits is 112896, while the sum is 40.

The spelling of 12130434787 in words is "twelve billion, one hundred thirty million, four hundred thirty-four thousand, seven hundred eighty-seven".