78730171873 has 8 divisors (see below), whose sum is σ = 83703284928. Its totient is φ = 73886230704.

The previous prime is 78730171841. The next prime is 78730171937. The reversal of 78730171873 is 37817103787.

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

It is a cyclic number.

It is not a de Polignac number, because 78730171873 - 2⁵ = 78730171841 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78730171873.

It is not an unprimeable number, because it can be changed into a prime (78730171973) 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, 32291715 + ... + 32294152.

It is an arithmetic number, because the mean of its divisors is an integer number (10462910616).

Almost surely, 2^78730171873 is an apocalyptic number.

It is an amenable number.

78730171873 is a deficient number, since it is larger than the sum of its proper divisors (4973113055).

78730171873 is a wasteful number, since it uses less digits than its factorization.

78730171873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64585943.

The product of its (nonzero) digits is 1382976, while the sum is 52.

The spelling of 78730171873 in words is "seventy-eight billion, seven hundred thirty million, one hundred seventy-one thousand, eight hundred seventy-three".