13666102573901 has 4 divisors (see below), whose sum is σ = 13666111417500. Its totient is φ = 13666093730304.

The previous prime is 13666102573859. The next prime is 13666102573913. The reversal of 13666102573901 is 10937520166631.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 10521421018276 + 3144681555625 = 3243674^2 + 1773325^2 .

It is a cyclic number.

It is not a de Polignac number, because 13666102573901 - 2²² = 13666098379597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13666102573901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13666102578901) 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, 1428326 + ... + 5419623.

It is an arithmetic number, because the mean of its divisors is an integer number (3416527854375).

Almost surely, 2^{13666102573901} is an apocalyptic number.

It is an amenable number.

13666102573901 is a deficient number, since it is larger than the sum of its proper divisors (8843599).

13666102573901 is an equidigital number, since it uses as much as digits as its factorization.

13666102573901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8843598.

The product of its (nonzero) digits is 1224720, while the sum is 50.

The spelling of 13666102573901 in words is "thirteen trillion, six hundred sixty-six billion, one hundred two million, five hundred seventy-three thousand, nine hundred one".