78999512363 has 4 divisors (see below), whose sum is σ = 83646542520. Its totient is φ = 74352482208.

The previous prime is 78999512357. The next prime is 78999512399. The reversal of 78999512363 is 36321599987.

It is a happy number.

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

It is not a de Polignac number, because 78999512363 - 2³² = 74704545067 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78999512296 and 78999512305.

It is not an unprimeable number, because it can be changed into a prime (78999512663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2323515053 + ... + 2323515086.

It is an arithmetic number, because the mean of its divisors is an integer number (20911635630).

Almost surely, 2^78999512363 is an apocalyptic number.

78999512363 is a deficient number, since it is larger than the sum of its proper divisors (4647030157).

78999512363 is a wasteful number, since it uses less digits than its factorization.

78999512363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4647030156.

The product of its digits is 22044960, while the sum is 62.

The spelling of 78999512363 in words is "seventy-eight billion, nine hundred ninety-nine million, five hundred twelve thousand, three hundred sixty-three".