13078249001249 has 4 divisors (see below), whose sum is σ = 13146011949636. Its totient is φ = 13010486052864.

The previous prime is 13078249001179. The next prime is 13078249001291. The reversal of 13078249001249 is 94210094287031.

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 8049249894400 + 5028999106849 = 2837120^2 + 2242543^2 .

It is a cyclic number.

It is not a de Polignac number, because 13078249001249 - 2²⁴ = 13078232224033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13078249001197 and 13078249001206.

It is not an unprimeable number, because it can be changed into a prime (13078249001849) 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, 33881473904 + ... + 33881474289.

It is an arithmetic number, because the mean of its divisors is an integer number (3286502987409).

Almost surely, 2^{13078249001249} is an apocalyptic number.

It is an amenable number.

13078249001249 is a deficient number, since it is larger than the sum of its proper divisors (67762948387).

13078249001249 is an equidigital number, since it uses as much as digits as its factorization.

13078249001249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67762948386.

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 13078249001249 in words is "thirteen trillion, seventy-eight billion, two hundred forty-nine million, one thousand, two hundred forty-nine".