12511443392677 has 4 divisors (see below), whose sum is σ = 12849590511436. Its totient is φ = 12173296273920.

The previous prime is 12511443392659. The next prime is 12511443392687. The reversal of 12511443392677 is 77629334411521.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8383289042881 + 4128154349796 = 2895391^2 + 2031786^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12511443392677 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 (12511443392687) 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, 169073559324 + ... + 169073559397.

It is an arithmetic number, because the mean of its divisors is an integer number (3212397627859).

Almost surely, 2^{12511443392677} is an apocalyptic number.

It is an amenable number.

12511443392677 is a deficient number, since it is larger than the sum of its proper divisors (338147118759).

12511443392677 is an equidigital number, since it uses as much as digits as its factorization.

12511443392677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338147118758.

The product of its digits is 7620480, while the sum is 55.

The spelling of 12511443392677 in words is "twelve trillion, five hundred eleven billion, four hundred forty-three million, three hundred ninety-two thousand, six hundred seventy-seven".