12777761036213 has 4 divisors (see below), whose sum is σ = 12854274575520. Its totient is φ = 12701247496908.

The previous prime is 12777761036197. The next prime is 12777761036263. The reversal of 12777761036213 is 31263016777721.

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 12777761036213 - 2⁴ = 12777761036197 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 (12777761036263) 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, 38256769403 + ... + 38256769736.

It is an arithmetic number, because the mean of its divisors is an integer number (3213568643880).

Almost surely, 2^{12777761036213} is an apocalyptic number.

It is an amenable number.

12777761036213 is a deficient number, since it is larger than the sum of its proper divisors (76513539307).

12777761036213 is an equidigital number, since it uses as much as digits as its factorization.

12777761036213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76513539306.

The product of its (nonzero) digits is 3111696, while the sum is 53.

The spelling of 12777761036213 in words is "twelve trillion, seven hundred seventy-seven billion, seven hundred sixty-one million, thirty-six thousand, two hundred thirteen".