12813506778241 has 8 divisors (see below), whose sum is σ = 13804800395904. Its totient is φ = 11823018767760.

The previous prime is 12813506778239. The next prime is 12813506778253. The reversal of 12813506778241 is 14287760531821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12813506778241 - 2¹ = 12813506778239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12813506778041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201368755 + ... + 201432376.

It is an arithmetic number, because the mean of its divisors is an integer number (1725600049488).

Almost surely, 2^{12813506778241} is an apocalyptic number.

It is an amenable number.

12813506778241 is a deficient number, since it is larger than the sum of its proper divisors (991293617663).

12813506778241 is a wasteful number, since it uses less digits than its factorization.

12813506778241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402803591.

The product of its (nonzero) digits is 4515840, while the sum is 55.

The spelling of 12813506778241 in words is "twelve trillion, eight hundred thirteen billion, five hundred six million, seven hundred seventy-eight thousand, two hundred forty-one".