78753045173 has 24 divisors (see below), whose sum is σ = 91863180864. Its totient is φ = 67229402240.

The previous prime is 78753045169. The next prime is 78753045179. The reversal of 78753045173 is 37154035787.

It is not a de Polignac number, because 78753045173 - 2² = 78753045169 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78753045179) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 868040 + ... + 954462.

It is an arithmetic number, because the mean of its divisors is an integer number (3827632536).

Almost surely, 2^78753045173 is an apocalyptic number.

It is an amenable number.

78753045173 is a deficient number, since it is larger than the sum of its proper divisors (13110135691).

78753045173 is a wasteful number, since it uses less digits than its factorization.

78753045173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86905 (or 86894 counting only the distinct ones).

The product of its (nonzero) digits is 2469600, while the sum is 50.

The spelling of 78753045173 in words is "seventy-eight billion, seven hundred fifty-three million, forty-five thousand, one hundred seventy-three".