78695047178 has 16 divisors (see below), whose sum is σ = 128885440896. Its totient is φ = 35739440640.

The previous prime is 78695047177. The next prime is 78695047187. The reversal of 78695047178 is 87174059687.

It is a self number, because there is not a number n which added to its sum of digits gives 78695047178.

It is not an unprimeable number, because it can be changed into a prime (78695047177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1525826 + ... + 1576557.

It is an arithmetic number, because the mean of its divisors is an integer number (8055340056).

Almost surely, 2^78695047178 is an apocalyptic number.

78695047178 is a deficient number, since it is larger than the sum of its proper divisors (50190393718).

78695047178 is a wasteful number, since it uses less digits than its factorization.

78695047178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3103549.

The product of its (nonzero) digits is 23708160, while the sum is 62.

The spelling of 78695047178 in words is "seventy-eight billion, six hundred ninety-five million, forty-seven thousand, one hundred seventy-eight".