78078355075 has 24 divisors (see below), whose sum is σ = 110662917120. Its totient is φ = 53532314400.

The previous prime is 78078355073. The next prime is 78078355087. The reversal of 78078355075 is 57055387087.

It is not a de Polignac number, because 78078355075 - 2¹ = 78078355073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78078355073) 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 23 ways as a sum of consecutive naturals, for example, 1518030 + ... + 1568620.

It is an arithmetic number, because the mean of its divisors is an integer number (4610954880).

Almost surely, 2^78078355075 is an apocalyptic number.

78078355075 is a deficient number, since it is larger than the sum of its proper divisors (32584562045).

78078355075 is a wasteful number, since it uses less digits than its factorization.

78078355075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59427 (or 59422 counting only the distinct ones).

The product of its (nonzero) digits is 8232000, while the sum is 55.

The spelling of 78078355075 in words is "seventy-eight billion, seventy-eight million, three hundred fifty-five thousand, seventy-five".