3995887768247 has 8 divisors (see below), whose sum is σ = 4012902756000. Its totient is φ = 3978891409824.

The previous prime is 3995887768207. The next prime is 3995887768273. The reversal of 3995887768247 is 7428677885993.

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

It is a cyclic number.

It is not a de Polignac number, because 3995887768247 - 2²⁴ = 3995870991031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3995887768207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4227347 + ... + 5085492.

It is an arithmetic number, because the mean of its divisors is an integer number (501612844500).

Almost surely, 2^{3995887768247} is an apocalyptic number.

3995887768247 is a deficient number, since it is larger than the sum of its proper divisors (17014987753).

3995887768247 is a wasteful number, since it uses less digits than its factorization.

3995887768247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9314665.

The product of its digits is 10241925120, while the sum is 83.

The spelling of 3995887768247 in words is "three trillion, nine hundred ninety-five billion, eight hundred eighty-seven million, seven hundred sixty-eight thousand, two hundred forty-seven".