12046777321 has 4 divisors (see below), whose sum is σ = 12570550272. Its totient is φ = 11523004372.

The previous prime is 12046777307. The next prime is 12046777409. The reversal of 12046777321 is 12377764021.

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 12046777321 - 2³¹ = 9899293673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12046777621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261886441 + ... + 261886486.

It is an arithmetic number, because the mean of its divisors is an integer number (3142637568).

Almost surely, 2^12046777321 is an apocalyptic number.

It is an amenable number.

12046777321 is a deficient number, since it is larger than the sum of its proper divisors (523772951).

12046777321 is an equidigital number, since it uses as much as digits as its factorization.

12046777321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523772950.

The product of its (nonzero) digits is 98784, while the sum is 40.

The spelling of 12046777321 in words is "twelve billion, forty-six million, seven hundred seventy-seven thousand, three hundred twenty-one".