78799099787 has 8 divisors (see below), whose sum is σ = 79109537760. Its totient is φ = 78488744320.

The previous prime is 78799099723. The next prime is 78799099823.

78799099787 is nontrivially palindromic in base 10.

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 78799099787 - 2⁶ = 78799099723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78799099087) 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 7 ways as a sum of consecutive naturals, for example, 2488289 + ... + 2519757.

It is an arithmetic number, because the mean of its divisors is an integer number (9888692220).

Almost surely, 2^78799099787 is an apocalyptic number.

78799099787 is a deficient number, since it is larger than the sum of its proper divisors (310437973).

78799099787 is a wasteful number, since it uses less digits than its factorization.

78799099787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41253.

The product of its (nonzero) digits is 1008189504, while the sum is 80.

The spelling of 78799099787 in words is "seventy-eight billion, seven hundred ninety-nine million, ninety-nine thousand, seven hundred eighty-seven".