78231066323 has 4 divisors (see below), whose sum is σ = 78268989408. Its totient is φ = 78193143240.

The previous prime is 78231066311. The next prime is 78231066359. The reversal of 78231066323 is 32366013287.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78231066323 - 2¹⁰ = 78231065299 is a prime.

It is a super-2 number, since 2×78231066323² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78231062323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18958448 + ... + 18962573.

It is an arithmetic number, because the mean of its divisors is an integer number (19567247352).

Almost surely, 2^78231066323 is an apocalyptic number.

78231066323 is a deficient number, since it is larger than the sum of its proper divisors (37923085).

78231066323 is a wasteful number, since it uses less digits than its factorization.

78231066323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37923084.

The product of its (nonzero) digits is 217728, while the sum is 41.

The spelling of 78231066323 in words is "seventy-eight billion, two hundred thirty-one million, sixty-six thousand, three hundred twenty-three".