3995897451271 has 24 divisors (see below), whose sum is σ = 4380615146880. Its totient is φ = 3614809485600.

The previous prime is 3995897451263. The next prime is 3995897451407. The reversal of 3995897451271 is 1721547985993.

It is not a de Polignac number, because 3995897451271 - 2³ = 3995897451263 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3995897451271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3995897451241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3577347205 + ... + 3577348321.

It is an arithmetic number, because the mean of its divisors is an integer number (182525631120).

Almost surely, 2^{3995897451271} is an apocalyptic number.

3995897451271 is a deficient number, since it is larger than the sum of its proper divisors (384717695609).

3995897451271 is an equidigital number, since it uses as much as digits as its factorization.

3995897451271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3415 (or 2298 counting only the distinct ones).

The product of its digits is 171460800, while the sum is 70.

The spelling of 3995897451271 in words is "three trillion, nine hundred ninety-five billion, eight hundred ninety-seven million, four hundred fifty-one thousand, two hundred seventy-one".