78174613030117 has 2 divisors, whose sum is σ = 78174613030118. Its totient is φ = 78174613030116.

The previous prime is 78174613030109. The next prime is 78174613030259. The reversal of 78174613030117 is 71103031647187.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43632181077156 + 34542431952961 = 6605466^2 + 5877281^2 .

It is a cyclic number.

It is not a de Polignac number, because 78174613030117 - 2³ = 78174613030109 is a prime.

It is a super-2 number, since 2×78174613030117² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78174613030817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39087306515058 + 39087306515059.

It is an arithmetic number, because the mean of its divisors is an integer number (39087306515059).

Almost surely, 2^{78174613030117} is an apocalyptic number.

It is an amenable number.

78174613030117 is a deficient number, since it is larger than the sum of its proper divisors (1).

78174613030117 is an equidigital number, since it uses as much as digits as its factorization.

78174613030117 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 49.

The spelling of 78174613030117 in words is "seventy-eight trillion, one hundred seventy-four billion, six hundred thirteen million, thirty thousand, one hundred seventeen".