78843036357 has 12 divisors (see below), whose sum is σ = 115163986860. Its totient is φ = 51971439168.

The previous prime is 78843036331. The next prime is 78843036359. The reversal of 78843036357 is 75363034887.

It can be written as a sum of positive squares in 2 ways, for example, as 10366090596 + 68476945761 = 101814^2 + 261681^2 .

It is not a de Polignac number, because 78843036357 - 2¹⁹ = 78842512069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78843036359) 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 11 ways as a sum of consecutive naturals, for example, 49214578 + ... + 49216179.

It is an arithmetic number, because the mean of its divisors is an integer number (9596998905).

Almost surely, 2^78843036357 is an apocalyptic number.

It is an amenable number.

78843036357 is a deficient number, since it is larger than the sum of its proper divisors (36320950503).

78843036357 is a wasteful number, since it uses less digits than its factorization.

78843036357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98430852 (or 98430849 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 54.

The spelling of 78843036357 in words is "seventy-eight billion, eight hundred forty-three million, thirty-six thousand, three hundred fifty-seven".