78869323339 has 4 divisors (see below), whose sum is σ = 79020704520. Its totient is φ = 78717942160.

The previous prime is 78869323333. The next prime is 78869323349. The reversal of 78869323339 is 93332396887.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93332396887 = 108961 ⋅856567.

It is a cyclic number.

It is not a de Polignac number, because 78869323339 - 2⁵ = 78869323307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78869323333) 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, 75689809 + ... + 75690850.

It is an arithmetic number, because the mean of its divisors is an integer number (19755176130).

Almost surely, 2^78869323339 is an apocalyptic number.

78869323339 is a deficient number, since it is larger than the sum of its proper divisors (151381181).

78869323339 is a wasteful number, since it uses less digits than its factorization.

78869323339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151381180.

The product of its digits is 35271936, while the sum is 61.

The spelling of 78869323339 in words is "seventy-eight billion, eight hundred sixty-nine million, three hundred twenty-three thousand, three hundred thirty-nine".