3668642257365 has 24 divisors (see below), whose sum is σ = 6360051091680. Its totient is φ = 1956279610464.

The previous prime is 3668642257351. The next prime is 3668642257387. The reversal of 3668642257365 is 5637522468663.

3668642257365 is a `hidden beast` number, since 3 + 6 + 6 + 86 + 422 + 5 + 73 + 65 = 666.

It is not a de Polignac number, because 3668642257365 - 2¹⁰ = 3668642256341 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6596307 + ... + 7130816.

It is an arithmetic number, because the mean of its divisors is an integer number (265002128820).

Almost surely, 2^{3668642257365} is an apocalyptic number.

It is an amenable number.

3668642257365 is a deficient number, since it is larger than the sum of its proper divisors (2691408834315).

3668642257365 is a wasteful number, since it uses less digits than its factorization.

3668642257365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13733073 (or 13733070 counting only the distinct ones).

The product of its digits is 261273600, while the sum is 63.

The spelling of 3668642257365 in words is "three trillion, six hundred sixty-eight billion, six hundred forty-two million, two hundred fifty-seven thousand, three hundred sixty-five".