78010117 has 8 divisors (see below), whose sum is σ = 79615224. Its totient is φ = 76410048.

The previous prime is 78010099. The next prime is 78010133. The reversal of 78010117 is 71101087.

It can be written as a sum of positive squares in 4 ways, for example, as 14791716 + 63218401 = 3846^2 + 7951^2 .

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-78010117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78010091 and 78010100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78010147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52963 + ... + 54415.

It is an arithmetic number, because the mean of its divisors is an integer number (9951903).

Almost surely, 2^78010117 is an apocalyptic number.

It is an amenable number.

78010117 is a deficient number, since it is larger than the sum of its proper divisors (1605107).

78010117 is a wasteful number, since it uses less digits than its factorization.

78010117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2519.

The product of its (nonzero) digits is 392, while the sum is 25.

The square root of 78010117 is about 8832.3336100942. Note that the first 3 decimals coincide. The cubic root of 78010117 is about 427.2843402292.

The spelling of 78010117 in words is "seventy-eight million, ten thousand, one hundred seventeen".