3965747646813 has 8 divisors (see below), whose sum is σ = 5517561943488. Its totient is φ = 2528882557344.

The previous prime is 3965747646781. The next prime is 3965747646841. The reversal of 3965747646813 is 3186467475693.

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

It is not a de Polignac number, because 3965747646813 - 2⁵ = 3965747646781 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (69), and also a Moran number because the ratio is a prime number: 57474603577 = 3965747646813 / (3 + 9 + 6 + 5 + 7 + 4 + 7 + 6 + 4 + 6 + 8 + 1 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3965747646713) 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, 28737301720 + ... + 28737301857.

It is an arithmetic number, because the mean of its divisors is an integer number (689695242936).

Almost surely, 2^{3965747646813} is an apocalyptic number.

It is an amenable number.

3965747646813 is a deficient number, since it is larger than the sum of its proper divisors (1551814296675).

3965747646813 is a wasteful number, since it uses less digits than its factorization.

3965747646813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57474603603.

The product of its digits is 548674560, while the sum is 69.

The spelling of 3965747646813 in words is "three trillion, nine hundred sixty-five billion, seven hundred forty-seven million, six hundred forty-six thousand, eight hundred thirteen".