13775128827601 has 4 divisors (see below), whose sum is σ = 13775138396992. Its totient is φ = 13775119258212.

The previous prime is 13775128827589. The next prime is 13775128827637. The reversal of 13775128827601 is 10672882157731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13775128827601 - 2²⁵ = 13775095273169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13775128827641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2137101 + ... + 5667226.

It is an arithmetic number, because the mean of its divisors is an integer number (3443784599248).

Almost surely, 2^{13775128827601} is an apocalyptic number.

It is an amenable number.

13775128827601 is a deficient number, since it is larger than the sum of its proper divisors (9569391).

13775128827601 is an equidigital number, since it uses as much as digits as its factorization.

13775128827601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9569390.

The product of its (nonzero) digits is 7902720, while the sum is 58.

The spelling of 13775128827601 in words is "thirteen trillion, seven hundred seventy-five billion, one hundred twenty-eight million, eight hundred twenty-seven thousand, six hundred one".