2126345332729 has 4 divisors (see below), whose sum is σ = 2126609844480. Its totient is φ = 2126080820980.

The previous prime is 2126345332711. The next prime is 2126345332739. The reversal of 2126345332729 is 9272335436212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2126345332729 - 2³³ = 2117755398137 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2126345332739) 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, 132243817 + ... + 132259894.

It is an arithmetic number, because the mean of its divisors is an integer number (531652461120).

Almost surely, 2^{2126345332729} is an apocalyptic number.

It is an amenable number.

2126345332729 is a deficient number, since it is larger than the sum of its proper divisors (264511751).

2126345332729 is an equidigital number, since it uses as much as digits as its factorization.

2126345332729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264511750.

The product of its digits is 3265920, while the sum is 49.

The spelling of 2126345332729 in words is "two trillion, one hundred twenty-six billion, three hundred forty-five million, three hundred thirty-two thousand, seven hundred twenty-nine".