78407708843 has 4 divisors (see below), whose sum is σ = 78753117480. Its totient is φ = 78062300208.

The previous prime is 78407708723. The next prime is 78407708851. The reversal of 78407708843 is 34880770487.

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

It is a cyclic number.

It is not a de Polignac number, because 78407708843 - 2¹⁴ = 78407692459 is a prime.

It is a super-2 number, since 2×78407708843² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78407708143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172703978 + ... + 172704431.

It is an arithmetic number, because the mean of its divisors is an integer number (19688279370).

Almost surely, 2^78407708843 is an apocalyptic number.

78407708843 is a deficient number, since it is larger than the sum of its proper divisors (345408637).

78407708843 is a wasteful number, since it uses less digits than its factorization.

78407708843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345408636.

The product of its (nonzero) digits is 8429568, while the sum is 56.

The spelling of 78407708843 in words is "seventy-eight billion, four hundred seven million, seven hundred eight thousand, eight hundred forty-three".