3420112325681 has 2 divisors, whose sum is σ = 3420112325682. Its totient is φ = 3420112325680.

The previous prime is 3420112325647. The next prime is 3420112325683. The reversal of 3420112325681 is 1865232110243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3069097549456 + 351014776225 = 1751884^2 + 592465^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3420112325681 is a prime.

It is a super-2 number, since 2×3420112325681² (a number of 26 digits) contains 22 as substring.

Together with 3420112325683, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3420112325683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1710056162840 + 1710056162841.

It is an arithmetic number, because the mean of its divisors is an integer number (1710056162841).

Almost surely, 2^{3420112325681} is an apocalyptic number.

It is an amenable number.

3420112325681 is a deficient number, since it is larger than the sum of its proper divisors (1).

3420112325681 is an equidigital number, since it uses as much as digits as its factorization.

3420112325681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 3420112325681 in words is "three trillion, four hundred twenty billion, one hundred twelve million, three hundred twenty-five thousand, six hundred eighty-one".