75785437943688 has 128 divisors (see below), whose sum is σ = 218850118945920. Its totient is φ = 21613943746560.

The previous prime is 75785437943641. The next prime is 75785437943717. The reversal of 75785437943688 is 88634973458757.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 75785437943688.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 265066506 + ... + 265352262.

It is an arithmetic number, because the mean of its divisors is an integer number (1709766554265).

Almost surely, 2^{75785437943688} is an apocalyptic number.

It is an amenable number.

75785437943688 is an abundant number, since it is smaller than the sum of its proper divisors (143064681002232).

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

75785437943688 is a wasteful number, since it uses less digits than its factorization.

75785437943688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344887 (or 344883 counting only the distinct ones).

The product of its digits is 34139750400, while the sum is 84.

The spelling of 75785437943688 in words is "seventy-five trillion, seven hundred eighty-five billion, four hundred thirty-seven million, nine hundred forty-three thousand, six hundred eighty-eight".