12921046535 has 16 divisors (see below), whose sum is σ = 15788772192. Its totient is φ = 10148457600.

The previous prime is 12921046531. The next prime is 12921046549. The reversal of 12921046535 is 53564012921.

It is not a de Polignac number, because 12921046535 - 2² = 12921046531 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12921046531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125852 + ... + 204158.

It is an arithmetic number, because the mean of its divisors is an integer number (986798262).

Almost surely, 2^12921046535 is an apocalyptic number.

12921046535 is a deficient number, since it is larger than the sum of its proper divisors (2867725657).

12921046535 is an equidigital number, since it uses as much as digits as its factorization.

12921046535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78914.

The product of its (nonzero) digits is 64800, while the sum is 38.

The spelling of 12921046535 in words is "twelve billion, nine hundred twenty-one million, forty-six thousand, five hundred thirty-five".