13915860045397 has 4 divisors (see below), whose sum is σ = 13915886938540. Its totient is φ = 13915833152256.

The previous prime is 13915860045391. The next prime is 13915860045511. The reversal of 13915860045397 is 79354006851931.

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 12140980640881 + 1774879404516 = 3484391^2 + 1332246^2 .

It is a cyclic number.

It is not a de Polignac number, because 13915860045397 - 2³⁹ = 13366104231509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13915860045391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12654858 + ... + 13710475.

It is an arithmetic number, because the mean of its divisors is an integer number (3478971734635).

Almost surely, 2^{13915860045397} is an apocalyptic number.

It is an amenable number.

13915860045397 is a deficient number, since it is larger than the sum of its proper divisors (26893143).

13915860045397 is an equidigital number, since it uses as much as digits as its factorization.

13915860045397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26893142.

The product of its (nonzero) digits is 24494400, while the sum is 61.

The spelling of 13915860045397 in words is "thirteen trillion, nine hundred fifteen billion, eight hundred sixty million, forty-five thousand, three hundred ninety-seven".