78195345823 has 8 divisors (see below), whose sum is σ = 94069589120. Its totient is φ = 63496972440.

The previous prime is 78195345821. The next prime is 78195345827. The reversal of 78195345823 is 32854359187.

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 78195345823 - 2¹ = 78195345821 is a prime.

It is a super-2 number, since 2×78195345823² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78195345821) 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 7 ways as a sum of consecutive naturals, for example, 293967333 + ... + 293967598.

It is an arithmetic number, because the mean of its divisors is an integer number (11758698640).

Almost surely, 2^78195345823 is an apocalyptic number.

78195345823 is a deficient number, since it is larger than the sum of its proper divisors (15874243297).

78195345823 is a wasteful number, since it uses less digits than its factorization.

78195345823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587934957.

The product of its digits is 7257600, while the sum is 55.

The spelling of 78195345823 in words is "seventy-eight billion, one hundred ninety-five million, three hundred forty-five thousand, eight hundred twenty-three".