78469393847 has 8 divisors (see below), whose sum is σ = 85295273616. Its totient is φ = 71756338752.

The previous prime is 78469393841. The next prime is 78469393897. The reversal of 78469393847 is 74839396487.

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 78469393847 - 2¹⁰ = 78469392823 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 (78469393841) 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, 28204718 + ... + 28207499.

It is an arithmetic number, because the mean of its divisors is an integer number (10661909202).

Almost surely, 2^78469393847 is an apocalyptic number.

78469393847 is a deficient number, since it is larger than the sum of its proper divisors (6825879769).

78469393847 is a wasteful number, since it uses less digits than its factorization.

78469393847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56412337.

The product of its digits is 219469824, while the sum is 68.

The spelling of 78469393847 in words is "seventy-eight billion, four hundred sixty-nine million, three hundred ninety-three thousand, eight hundred forty-seven".