3668538686835 has 32 divisors (see below), whose sum is σ = 6405026266368. Its totient is φ = 1778196885120.

The previous prime is 3668538686833. The next prime is 3668538686837. The reversal of 3668538686835 is 5386868358663.

It is an interprime number because it is at equal distance from previous prime (3668538686833) and next prime (3668538686837).

It is not a de Polignac number, because 3668538686835 - 2¹ = 3668538686833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3668538686833) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2450452 + ... + 3652641.

It is an arithmetic number, because the mean of its divisors is an integer number (200157070824).

Almost surely, 2^{3668538686835} is an apocalyptic number.

3668538686835 is a deficient number, since it is larger than the sum of its proper divisors (2736487579533).

3668538686835 is a wasteful number, since it uses less digits than its factorization.

3668538686835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6106755.

The product of its digits is 3583180800, while the sum is 75.

The spelling of 3668538686835 in words is "three trillion, six hundred sixty-eight billion, five hundred thirty-eight million, six hundred eighty-six thousand, eight hundred thirty-five".