13866517577557 has 4 divisors (see below), whose sum is σ = 13966276696960. Its totient is φ = 13766758458156.

The previous prime is 13866517577453. The next prime is 13866517577599. The reversal of 13866517577557 is 75577571566831.

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.

It is a cyclic number.

It is not a de Polignac number, because 13866517577557 - 2¹¹ = 13866517575509 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 13866517577557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13866517077557) 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, 49879559493 + ... + 49879559770.

It is an arithmetic number, because the mean of its divisors is an integer number (3491569174240).

Almost surely, 2^{13866517577557} is an apocalyptic number.

It is an amenable number.

13866517577557 is a deficient number, since it is larger than the sum of its proper divisors (99759119403).

13866517577557 is an equidigital number, since it uses as much as digits as its factorization.

13866517577557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99759119402.

The product of its digits is 1296540000, while the sum is 73.

The spelling of 13866517577557 in words is "thirteen trillion, eight hundred sixty-six billion, five hundred seventeen million, five hundred seventy-seven thousand, five hundred fifty-seven".