12713648154505 has 8 divisors (see below), whose sum is σ = 15256397632392. Its totient is φ = 10170905292288.

The previous prime is 12713648154479. The next prime is 12713648154509. The reversal of 12713648154505 is 50545184631721.

It can be written as a sum of positive squares in 4 ways, for example, as 5733970274041 + 6979677880464 = 2394571^2 + 2641908^2 .

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 12713648154505 - 2⁷ = 12713648154377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12713648154509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5028217 + ... + 7121113.

It is an arithmetic number, because the mean of its divisors is an integer number (1907049704049).

Almost surely, 2^{12713648154505} is an apocalyptic number.

It is an amenable number.

12713648154505 is a deficient number, since it is larger than the sum of its proper divisors (2542749477887).

12713648154505 is a wasteful number, since it uses less digits than its factorization.

12713648154505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3307835.

The product of its (nonzero) digits is 4032000, while the sum is 52.

The spelling of 12713648154505 in words is "twelve trillion, seven hundred thirteen billion, six hundred forty-eight million, one hundred fifty-four thousand, five hundred five".