3791343041021 has 4 divisors (see below), whose sum is σ = 3793360788000. Its totient is φ = 3789325294044.

The previous prime is 3791343040981. The next prime is 3791343041033. The reversal of 3791343041021 is 1201403431973.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3791343041021 - 2³⁴ = 3774163171837 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 (3791343041621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1008870671 + ... + 1008874428.

It is an arithmetic number, because the mean of its divisors is an integer number (948340197000).

Almost surely, 2^{3791343041021} is an apocalyptic number.

It is an amenable number.

3791343041021 is a deficient number, since it is larger than the sum of its proper divisors (2017746979).

3791343041021 is a wasteful number, since it uses less digits than its factorization.

3791343041021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2017746978.

The product of its (nonzero) digits is 54432, while the sum is 38.

Adding to 3791343041021 its reverse (1201403431973), we get a palindrome (4992746472994).

The spelling of 3791343041021 in words is "three trillion, seven hundred ninety-one billion, three hundred forty-three million, forty-one thousand, twenty-one".