3923921982571 has 8 divisors (see below), whose sum is σ = 4130466232320. Its totient is φ = 3717379936872.

The previous prime is 3923921982557. The next prime is 3923921982577. The reversal of 3923921982571 is 1752891293293.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3923921982571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3923921982577) 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, 4117746 + ... + 4980328.

It is an arithmetic number, because the mean of its divisors is an integer number (516308279040).

Almost surely, 2^{3923921982571} is an apocalyptic number.

3923921982571 is a deficient number, since it is larger than the sum of its proper divisors (206544249749).

3923921982571 is a wasteful number, since it uses less digits than its factorization.

3923921982571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102025.

The product of its digits is 14696640, while the sum is 61.

The spelling of 3923921982571 in words is "three trillion, nine hundred twenty-three billion, nine hundred twenty-one million, nine hundred eighty-two thousand, five hundred seventy-one".