3666003593865 has 16 divisors (see below), whose sum is σ = 5866209378816. Its totient is φ = 1955000707200.

The previous prime is 3666003593843. The next prime is 3666003593873. The reversal of 3666003593865 is 5683953006663.

It is not a de Polignac number, because 3666003593865 - 2²⁷ = 3665869376137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3666003593799 and 3666003593808.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12424921 + ... + 12716550.

It is an arithmetic number, because the mean of its divisors is an integer number (366638086176).

Almost surely, 2^{3666003593865} is an apocalyptic number.

It is an amenable number.

3666003593865 is a deficient number, since it is larger than the sum of its proper divisors (2200205784951).

3666003593865 is a wasteful number, since it uses less digits than its factorization.

3666003593865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25151200.

The product of its (nonzero) digits is 62985600, while the sum is 60.

The spelling of 3666003593865 in words is "three trillion, six hundred sixty-six billion, three million, five hundred ninety-three thousand, eight hundred sixty-five".