13378128555625 has 20 divisors (see below), whose sum is σ = 16717539787344. Its totient is φ = 10702355378000.

The previous prime is 13378128555607. The next prime is 13378128555629. The reversal of 13378128555625 is 52655582187331.

It is not a de Polignac number, because 13378128555625 - 2³¹ = 13375981071977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13378128555629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 80533902 + ... + 80699848.

Almost surely, 2^{13378128555625} is an apocalyptic number.

It is an amenable number.

13378128555625 is a deficient number, since it is larger than the sum of its proper divisors (3339411231719).

13378128555625 is an equidigital number, since it uses as much as digits as its factorization.

13378128555625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294954 (or 294939 counting only the distinct ones).

The product of its digits is 60480000, while the sum is 61.

The spelling of 13378128555625 in words is "thirteen trillion, three hundred seventy-eight billion, one hundred twenty-eight million, five hundred fifty-five thousand, six hundred twenty-five".