78684475758223 has 32 divisors (see below), whose sum is σ = 84265862630400. Its totient is φ = 73293652244736.

The previous prime is 78684475758211. The next prime is 78684475758253. The reversal of 78684475758223 is 32285757448687.

It is a cyclic number.

It is not a de Polignac number, because 78684475758223 - 2⁵ = 78684475758191 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78684475758223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78684475758253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2036908273 + ... + 2036946901.

It is an arithmetic number, because the mean of its divisors is an integer number (2633308207200).

Almost surely, 2^{78684475758223} is an apocalyptic number.

78684475758223 is a deficient number, since it is larger than the sum of its proper divisors (5581386872177).

78684475758223 is a wasteful number, since it uses less digits than its factorization.

78684475758223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44791.

The product of its digits is 5057740800, while the sum is 76.

The spelling of 78684475758223 in words is "seventy-eight trillion, six hundred eighty-four billion, four hundred seventy-five million, seven hundred fifty-eight thousand, two hundred twenty-three".