13515378705357 has 8 divisors (see below), whose sum is σ = 18021020850720. Its totient is φ = 9009994515120.

The previous prime is 13515378705349. The next prime is 13515378705371. The reversal of 13515378705357 is 75350787351531.

13515378705357 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13515378705357 - 2³ = 13515378705349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13515378705357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13515378705307) 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, 64366494 + ... + 64576127.

It is an arithmetic number, because the mean of its divisors is an integer number (2252627606340).

Almost surely, 2^{13515378705357} is an apocalyptic number.

It is an amenable number.

13515378705357 is a deficient number, since it is larger than the sum of its proper divisors (4505642145363).

13515378705357 is a wasteful number, since it uses less digits than its factorization.

13515378705357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128977563.

The product of its (nonzero) digits is 46305000, while the sum is 60.

The spelling of 13515378705357 in words is "thirteen trillion, five hundred fifteen billion, three hundred seventy-eight million, seven hundred five thousand, three hundred fifty-seven".