78358318807 has 16 divisors (see below), whose sum is σ = 83480503392. Its totient is φ = 73293465600.

The previous prime is 78358318777. The next prime is 78358318813. The reversal of 78358318807 is 70881385387.

It is a cyclic number.

It is not a de Polignac number, because 78358318807 - 2¹⁹ = 78357794519 is a prime.

It is a super-2 number, since 2×78358318807² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78358318847) 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 15 ways as a sum of consecutive naturals, for example, 11910703 + ... + 11917279.

It is an arithmetic number, because the mean of its divisors is an integer number (5217531462).

Almost surely, 2^78358318807 is an apocalyptic number.

78358318807 is a deficient number, since it is larger than the sum of its proper divisors (5122184585).

78358318807 is a wasteful number, since it uses less digits than its factorization.

78358318807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10818.

The product of its (nonzero) digits is 9031680, while the sum is 58.

The spelling of 78358318807 in words is "seventy-eight billion, three hundred fifty-eight million, three hundred eighteen thousand, eight hundred seven".