78329180017 has 8 divisors (see below), whose sum is σ = 85453214400. Its totient is φ = 71205678960.

The previous prime is 78329180011. The next prime is 78329180057. The reversal of 78329180017 is 71008192387.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78329180017 is a prime.

It is a super-2 number, since 2×78329180017² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78329180011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212859 + ... + 449407.

It is an arithmetic number, because the mean of its divisors is an integer number (10681651800).

Almost surely, 2^78329180017 is an apocalyptic number.

It is an amenable number.

78329180017 is a deficient number, since it is larger than the sum of its proper divisors (7124034383).

78329180017 is a wasteful number, since it uses less digits than its factorization.

78329180017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266663.

The product of its (nonzero) digits is 169344, while the sum is 46.

The spelling of 78329180017 in words is "seventy-eight billion, three hundred twenty-nine million, one hundred eighty thousand, seventeen".