78445944170 has 32 divisors (see below), whose sum is σ = 154118764800. Its totient is φ = 28511083840.

The previous prime is 78445944133. The next prime is 78445944173. The reversal of 78445944170 is 7144954487.

It is not an unprimeable number, because it can be changed into a prime (78445944173) 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, 31439 + ... + 397341.

It is an arithmetic number, because the mean of its divisors is an integer number (4816211400).

Almost surely, 2^78445944170 is an apocalyptic number.

78445944170 is a deficient number, since it is larger than the sum of its proper divisors (75672820630).

78445944170 is a wasteful number, since it uses less digits than its factorization.

78445944170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367870.

The product of its (nonzero) digits is 4515840, while the sum is 53.

It can be divided in two parts, 784 and 45944170, that added together give a palindrome (45944954).

The spelling of 78445944170 in words is "seventy-eight billion, four hundred forty-five million, nine hundred forty-four thousand, one hundred seventy".