3407994856991 has 2 divisors, whose sum is σ = 3407994856992. Its totient is φ = 3407994856990.

The previous prime is 3407994856943. The next prime is 3407994857023. The reversal of 3407994856991 is 1996584997043.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3407994856991 - 2³⁰ = 3406921115167 is a prime.

It is a super-2 number, since 2×3407994856991² (a number of 26 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3407994856291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1703997428495 + 1703997428496.

It is an arithmetic number, because the mean of its divisors is an integer number (1703997428496).

Almost surely, 2^{3407994856991} is an apocalyptic number.

3407994856991 is a deficient number, since it is larger than the sum of its proper divisors (1).

3407994856991 is an equidigital number, since it uses as much as digits as its factorization.

3407994856991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 529079040, while the sum is 74.

The spelling of 3407994856991 in words is "three trillion, four hundred seven billion, nine hundred ninety-four million, eight hundred fifty-six thousand, nine hundred ninety-one".