74706081917 has 2 divisors, whose sum is σ = 74706081918. Its totient is φ = 74706081916.

The previous prime is 74706081907. The next prime is 74706081971. The reversal of 74706081917 is 71918060747.

Together with next prime (74706081971) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49824489796 + 24881592121 = 223214^2 + 157739^2 .

It is a cyclic number.

It is not a de Polignac number, because 74706081917 - 2¹⁰ = 74706080893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74706081907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37353040958 + 37353040959.

It is an arithmetic number, because the mean of its divisors is an integer number (37353040959).

Almost surely, 2^74706081917 is an apocalyptic number.

It is an amenable number.

74706081917 is a deficient number, since it is larger than the sum of its proper divisors (1).

74706081917 is an equidigital number, since it uses as much as digits as its factorization.

74706081917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 592704, while the sum is 50.

The spelling of 74706081917 in words is "seventy-four billion, seven hundred six million, eighty-one thousand, nine hundred seventeen".