3665656585851 has 8 divisors (see below), whose sum is σ = 5263506892560. Its totient is φ = 2255788668192.

The previous prime is 3665656585849. The next prime is 3665656585957. The reversal of 3665656585851 is 1585856565663.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3665656585851 - 2¹ = 3665656585849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3665656585051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46995597216 + ... + 46995597293.

It is an arithmetic number, because the mean of its divisors is an integer number (657938361570).

Almost surely, 2^{3665656585851} is an apocalyptic number.

3665656585851 is a deficient number, since it is larger than the sum of its proper divisors (1597850306709).

3665656585851 is a wasteful number, since it uses less digits than its factorization.

3665656585851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93991194525.

The product of its digits is 777600000, while the sum is 69.

The spelling of 3665656585851 in words is "three trillion, six hundred sixty-five billion, six hundred fifty-six million, five hundred eighty-five thousand, eight hundred fifty-one".