78749786087 has 8 divisors (see below), whose sum is σ = 90004723200. Its totient is φ = 67496090904.

The previous prime is 78749786041. The next prime is 78749786119. The reversal of 78749786087 is 78068794787.

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 78749786087 - 2⁶ = 78749786023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78749786087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78749786287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170387 + ... + 431892.

It is an arithmetic number, because the mean of its divisors is an integer number (11250590400).

Almost surely, 2^78749786087 is an apocalyptic number.

78749786087 is a deficient number, since it is larger than the sum of its proper divisors (11254937113).

78749786087 is a wasteful number, since it uses less digits than its factorization.

78749786087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620965.

The product of its (nonzero) digits is 265531392, while the sum is 71.

The spelling of 78749786087 in words is "seventy-eight billion, seven hundred forty-nine million, seven hundred eighty-six thousand, eighty-seven".