12380736145 has 4 divisors (see below), whose sum is σ = 14856883380. Its totient is φ = 9904588912.

The previous prime is 12380736143. The next prime is 12380736157. The reversal of 12380736145 is 54163708321.

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 1984078849 + 10396657296 = 44543^2 + 101964^2 .

It is a cyclic number.

It is not a de Polignac number, because 12380736145 - 2¹ = 12380736143 is a prime.

It is a super-2 number, since 2×12380736145² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12380736098 and 12380736107.

It is not an unprimeable number, because it can be changed into a prime (12380736143) 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, 1238073610 + ... + 1238073619.

It is an arithmetic number, because the mean of its divisors is an integer number (3714220845).

Almost surely, 2^12380736145 is an apocalyptic number.

It is an amenable number.

12380736145 is a deficient number, since it is larger than the sum of its proper divisors (2476147235).

12380736145 is an equidigital number, since it uses as much as digits as its factorization.

12380736145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2476147234.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 12380736145 in words is "twelve billion, three hundred eighty million, seven hundred thirty-six thousand, one hundred forty-five".