5945425919981 has 2 divisors, whose sum is σ = 5945425919982. Its totient is φ = 5945425919980.

The previous prime is 5945425919947. The next prime is 5945425920011. The reversal of 5945425919981 is 1899195245495.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5726807955625 + 218617964356 = 2393075^2 + 467566^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5945425919981 is a prime.

It is a super-2 number, since 2×5945425919981² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5945425919281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2972712959990 + 2972712959991.

It is an arithmetic number, because the mean of its divisors is an integer number (2972712959991).

Almost surely, 2^{5945425919981} is an apocalyptic number.

It is an amenable number.

5945425919981 is a deficient number, since it is larger than the sum of its proper divisors (1).

5945425919981 is an equidigital number, since it uses as much as digits as its factorization.

5945425919981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952000, while the sum is 71.

The spelling of 5945425919981 in words is "five trillion, nine hundred forty-five billion, four hundred twenty-five million, nine hundred nineteen thousand, nine hundred eighty-one".