12051776017 has 4 divisors (see below), whose sum is σ = 12760704036. Its totient is φ = 11342848000.

The previous prime is 12051775987. The next prime is 12051776027. The reversal of 12051776017 is 71067715021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71067715021 = 47 ⋅1512079043.

It can be written as a sum of positive squares in 2 ways, for example, as 11220953041 + 830822976 = 105929^2 + 28824^2 .

It is a cyclic number.

It is not a de Polignac number, because 12051776017 - 2⁷ = 12051775889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12051776027) 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, 354463984 + ... + 354464017.

It is an arithmetic number, because the mean of its divisors is an integer number (3190176009).

Almost surely, 2^12051776017 is an apocalyptic number.

12051776017 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12051776017 is a deficient number, since it is larger than the sum of its proper divisors (708928019).

12051776017 is an equidigital number, since it uses as much as digits as its factorization.

12051776017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708928018.

The product of its (nonzero) digits is 20580, while the sum is 37.

The spelling of 12051776017 in words is "twelve billion, fifty-one million, seven hundred seventy-six thousand, seventeen".