12126813436829 has 16 divisors (see below), whose sum is σ = 15574235319552. Its totient is φ = 9177674381568.

The previous prime is 12126813436823. The next prime is 12126813436867. The reversal of 12126813436829 is 92863431862121.

It is not a de Polignac number, because 12126813436829 - 2²⁴ = 12126796659613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12126813436823) 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, 2896991084 + ... + 2896995269.

It is an arithmetic number, because the mean of its divisors is an integer number (973389707472).

Almost surely, 2^{12126813436829} is an apocalyptic number.

It is an amenable number.

12126813436829 is a deficient number, since it is larger than the sum of its proper divisors (3447421882723).

12126813436829 is a wasteful number, since it uses less digits than its factorization.

12126813436829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5793986396.

The product of its digits is 5971968, while the sum is 56.

The spelling of 12126813436829 in words is "twelve trillion, one hundred twenty-six billion, eight hundred thirteen million, four hundred thirty-six thousand, eight hundred twenty-nine".