78703551860 has 12 divisors (see below), whose sum is σ = 165277458948. Its totient is φ = 31481420736.

The previous prime is 78703551853. The next prime is 78703551869. The reversal of 78703551860 is 6815530787.

It can be written as a sum of positive squares in 2 ways, for example, as 21742092304 + 56961459556 = 147452^2 + 238666^2 .

It is a junction number, because it is equal to n+sod(n) for n = 78703551799 and 78703551808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78703551869) 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, 1967588777 + ... + 1967588816.

It is an arithmetic number, because the mean of its divisors is an integer number (13773121579).

Almost surely, 2^78703551860 is an apocalyptic number.

It is an amenable number.

78703551860 is an abundant number, since it is smaller than the sum of its proper divisors (86573907088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78703551860 is a wasteful number, since it uses less digits than its factorization.

78703551860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3935177602 (or 3935177600 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 50.

The spelling of 78703551860 in words is "seventy-eight billion, seven hundred three million, five hundred fifty-one thousand, eight hundred sixty".