12477783173 has 4 divisors (see below), whose sum is σ = 12478332960. Its totient is φ = 12477233388.

The previous prime is 12477783169. The next prime is 12477783181. The reversal of 12477783173 is 37138777421.

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, and also an emirpimes, since its reverse is a distinct semiprime: 37138777421 = 3221 ⋅11530201.

It is a cyclic number.

It is not a de Polignac number, because 12477783173 - 2² = 12477783169 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 (12477782173) 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, 239315 + ... + 286752.

It is an arithmetic number, because the mean of its divisors is an integer number (3119583240).

Almost surely, 2^12477783173 is an apocalyptic number.

It is an amenable number.

12477783173 is a deficient number, since it is larger than the sum of its proper divisors (549787).

12477783173 is an equidigital number, since it uses as much as digits as its factorization.

12477783173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549786.

The product of its digits is 1382976, while the sum is 50.

The spelling of 12477783173 in words is "twelve billion, four hundred seventy-seven million, seven hundred eighty-three thousand, one hundred seventy-three".