3993294841961 has 4 divisors (see below), whose sum is σ = 3993300690132. Its totient is φ = 3993288993792.

The previous prime is 3993294841951. The next prime is 3993294841997. The reversal of 3993294841961 is 1691484923993.

3993294841961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3383646201961 + 609648640000 = 1839469^2 + 780800^2 .

It is a cyclic number.

It is not a de Polignac number, because 3993294841961 - 2⁶ = 3993294841897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3993294841891 and 3993294841900.

It is not an unprimeable number, because it can be changed into a prime (3993294841931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1740020 + ... + 3318773.

It is an arithmetic number, because the mean of its divisors is an integer number (998325172533).

Almost surely, 2^{3993294841961} is an apocalyptic number.

It is an amenable number.

3993294841961 is a deficient number, since it is larger than the sum of its proper divisors (5848171).

3993294841961 is an equidigital number, since it uses as much as digits as its factorization.

3993294841961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5848170.

The product of its digits is 90699264, while the sum is 68.

The spelling of 3993294841961 in words is "three trillion, nine hundred ninety-three billion, two hundred ninety-four million, eight hundred forty-one thousand, nine hundred sixty-one".