78085107171 has 12 divisors (see below), whose sum is σ = 113419711080. Its totient is φ = 51765917280.

The previous prime is 78085107167. The next prime is 78085107181. The reversal of 78085107171 is 17170158087.

It is not a de Polignac number, because 78085107171 - 2² = 78085107167 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78085107161) 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 11 ways as a sum of consecutive naturals, for example, 24233370 + ... + 24236591.

It is an arithmetic number, because the mean of its divisors is an integer number (9451642590).

Almost surely, 2^78085107171 is an apocalyptic number.

78085107171 is a deficient number, since it is larger than the sum of its proper divisors (35334603909).

78085107171 is a wasteful number, since it uses less digits than its factorization.

78085107171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48470146 (or 48470143 counting only the distinct ones).

The product of its (nonzero) digits is 109760, while the sum is 45.

The spelling of 78085107171 in words is "seventy-eight billion, eighty-five million, one hundred seven thousand, one hundred seventy-one".