78729315223 has 8 divisors (see below), whose sum is σ = 84847458528. Its totient is φ = 72620035104.

The previous prime is 78729315193. The next prime is 78729315227. The reversal of 78729315223 is 32251392787.

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 78729315223 - 2⁵ = 78729315191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78729315227) 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, 2197336 + ... + 2232877.

It is an arithmetic number, because the mean of its divisors is an integer number (10605932316).

Almost surely, 2^78729315223 is an apocalyptic number.

78729315223 is a deficient number, since it is larger than the sum of its proper divisors (6118143305).

78729315223 is a wasteful number, since it uses less digits than its factorization.

78729315223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4431593.

The product of its digits is 1270080, while the sum is 49.

The spelling of 78729315223 in words is "seventy-eight billion, seven hundred twenty-nine million, three hundred fifteen thousand, two hundred twenty-three".