12576778223 has 4 divisors (see below), whose sum is σ = 12589573488. Its totient is φ = 12563982960.

The previous prime is 12576778219. The next prime is 12576778231. The reversal of 12576778223 is 32287767521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12576778223 - 2² = 12576778219 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 (12576778723) 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, 6396158 + ... + 6398123.

It is an arithmetic number, because the mean of its divisors is an integer number (3147393372).

Almost surely, 2^12576778223 is an apocalyptic number.

12576778223 is a deficient number, since it is larger than the sum of its proper divisors (12795265).

12576778223 is an equidigital number, since it uses as much as digits as its factorization.

12576778223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12795264.

The product of its digits is 1975680, while the sum is 50.

The spelling of 12576778223 in words is "twelve billion, five hundred seventy-six million, seven hundred seventy-eight thousand, two hundred twenty-three".