75899527668 has 72 divisors (see below), whose sum is σ = 200229611400. Its totient is φ = 24211224576.

The previous prime is 75899527651. The next prime is 75899527681. The reversal of 75899527668 is 86672599857.

75899527668 is a `hidden beast` number, since 7 + 5 + 8 + 99 + 527 + 6 + 6 + 8 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4154833764 + 71744693904 = 64458^2 + 267852^2 .

It is a junction number, because it is equal to n+sod(n) for n = 75899527596 and 75899527605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 203713 + ... + 439656.

It is an arithmetic number, because the mean of its divisors is an integer number (2780966825).

Almost surely, 2^75899527668 is an apocalyptic number.

It is an amenable number.

75899527668 is an abundant number, since it is smaller than the sum of its proper divisors (124330083732).

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

75899527668 is a wasteful number, since it uses less digits than its factorization.

75899527668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643521 (or 643516 counting only the distinct ones).

The product of its digits is 457228800, while the sum is 72.

The spelling of 75899527668 in words is "seventy-five billion, eight hundred ninety-nine million, five hundred twenty-seven thousand, six hundred sixty-eight".