75755775078 has 12 divisors (see below), whose sum is σ = 164137512708. Its totient is φ = 25251925020.

The previous prime is 75755775077. The next prime is 75755775089. The reversal of 75755775078 is 87057755757.

It is a happy number.

75755775078 is a `hidden beast` number, since 7 + 5 + 7 + 5 + 577 + 50 + 7 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75755775077) 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 5 ways as a sum of consecutive naturals, for example, 2104327068 + ... + 2104327103.

It is an arithmetic number, because the mean of its divisors is an integer number (13678126059).

Almost surely, 2^75755775078 is an apocalyptic number.

75755775078 is an abundant number, since it is smaller than the sum of its proper divisors (88381737630).

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

75755775078 is a wasteful number, since it uses less digits than its factorization.

75755775078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4208654179 (or 4208654176 counting only the distinct ones).

The product of its (nonzero) digits is 84035000, while the sum is 63.

The spelling of 75755775078 in words is "seventy-five billion, seven hundred fifty-five million, seven hundred seventy-five thousand, seventy-eight".