78841339715 has 4 divisors (see below), whose sum is σ = 94609607664. Its totient is φ = 63073071768.

The previous prime is 78841339699. The next prime is 78841339721. The reversal of 78841339715 is 51793314887.

It is a happy number.

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 78841339715 - 2⁴ = 78841339699 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7884133967 + ... + 7884133976.

It is an arithmetic number, because the mean of its divisors is an integer number (23652401916).

Almost surely, 2^78841339715 is an apocalyptic number.

78841339715 is a deficient number, since it is larger than the sum of its proper divisors (15768267949).

78841339715 is a wasteful number, since it uses less digits than its factorization.

78841339715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15768267948.

The product of its digits is 5080320, while the sum is 56.

The spelling of 78841339715 in words is "seventy-eight billion, eight hundred forty-one million, three hundred thirty-nine thousand, seven hundred fifteen".