74615512117 has 2 divisors, whose sum is σ = 74615512118. Its totient is φ = 74615512116.

The previous prime is 74615512109. The next prime is 74615512163. The reversal of 74615512117 is 71121551647.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70111625796 + 4503886321 = 264786^2 + 67111^2 .

It is an emirp because it is prime and its reverse (71121551647) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74615512117 - 2³ = 74615512109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74615512117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74615512177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37307756058 + 37307756059.

It is an arithmetic number, because the mean of its divisors is an integer number (37307756059).

Almost surely, 2^74615512117 is an apocalyptic number.

It is an amenable number.

74615512117 is a deficient number, since it is larger than the sum of its proper divisors (1).

74615512117 is an equidigital number, since it uses as much as digits as its factorization.

74615512117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58800, while the sum is 40.

The spelling of 74615512117 in words is "seventy-four billion, six hundred fifteen million, five hundred twelve thousand, one hundred seventeen".