75165907666 has 32 divisors (see below), whose sum is σ = 121033438848. Its totient is φ = 34918646400.

The previous prime is 75165907627. The next prime is 75165907667. The reversal of 75165907666 is 66670956157.

It is a self number, because there is not a number n which added to its sum of digits gives 75165907666.

It is not an unprimeable number, because it can be changed into a prime (75165907667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 986161 + ... + 1059643.

It is an arithmetic number, because the mean of its divisors is an integer number (3782294964).

Almost surely, 2^75165907666 is an apocalyptic number.

75165907666 is a deficient number, since it is larger than the sum of its proper divisors (45867531182).

75165907666 is a wasteful number, since it uses less digits than its factorization.

75165907666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74146.

The product of its (nonzero) digits is 14288400, while the sum is 58.

The spelling of 75165907666 in words is "seventy-five billion, one hundred sixty-five million, nine hundred seven thousand, six hundred sixty-six".