3904944267521 has 8 divisors (see below), whose sum is σ = 4260088456704. Its totient is φ = 3549824954320.

The previous prime is 3904944267491. The next prime is 3904944267529. The reversal of 3904944267521 is 1257624494093.

It is a happy number.

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 3904944267521 - 2⁶ = 3904944267457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3904944267529) 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, 5890010 + ... + 6519363.

It is an arithmetic number, because the mean of its divisors is an integer number (532511057088).

Almost surely, 2^{3904944267521} is an apocalyptic number.

It is an amenable number.

3904944267521 is a deficient number, since it is larger than the sum of its proper divisors (355144189183).

3904944267521 is a wasteful number, since it uses less digits than its factorization.

3904944267521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12437991.

The product of its (nonzero) digits is 13063680, while the sum is 56.

The spelling of 3904944267521 in words is "three trillion, nine hundred four billion, nine hundred forty-four million, two hundred sixty-seven thousand, five hundred twenty-one".