3394943707681 has 4 divisors (see below), whose sum is σ = 3504458020864. Its totient is φ = 3285429394500.

The previous prime is 3394943707667. The next prime is 3394943707723. The reversal of 3394943707681 is 1867073494933.

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 3394943707681 - 2⁷ = 3394943707553 is a prime.

It is a super-2 number, since 2×3394943707681² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3394943707081) 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, 54757156545 + ... + 54757156606.

It is an arithmetic number, because the mean of its divisors is an integer number (876114505216).

Almost surely, 2^{3394943707681} is an apocalyptic number.

3394943707681 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3394943707681 is a deficient number, since it is larger than the sum of its proper divisors (109514313183).

3394943707681 is a wasteful number, since it uses less digits than its factorization.

3394943707681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109514313182.

The product of its (nonzero) digits is 82301184, while the sum is 64.

The spelling of 3394943707681 in words is "three trillion, three hundred ninety-four billion, nine hundred forty-three million, seven hundred seven thousand, six hundred eighty-one".