12445177361 has 4 divisors (see below), whose sum is σ = 12649196724. Its totient is φ = 12241158000.

The previous prime is 12445177337. The next prime is 12445177391. The reversal of 12445177361 is 16377154421.

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 3701992336 + 8743185025 = 60844^2 + 93505^2 .

It is a cyclic number.

It is not a de Polignac number, because 12445177361 - 2¹⁴ = 12445160977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12445177391) 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, 102009590 + ... + 102009711.

It is an arithmetic number, because the mean of its divisors is an integer number (3162299181).

Almost surely, 2^12445177361 is an apocalyptic number.

It is an amenable number.

12445177361 is a deficient number, since it is larger than the sum of its proper divisors (204019363).

12445177361 is an equidigital number, since it uses as much as digits as its factorization.

12445177361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204019362.

The product of its digits is 141120, while the sum is 41.

The spelling of 12445177361 in words is "twelve billion, four hundred forty-five million, one hundred seventy-seven thousand, three hundred sixty-one".