99750775807666 has 32 divisors (see below), whose sum is σ = 154535727294720. Its totient is φ = 48262903683456.

The previous prime is 99750775807621. The next prime is 99750775807757. The reversal of 99750775807666 is 66670857705799.

It is a self number, because there is not a number n which added to its sum of digits gives 99750775807666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145921780 + ... + 146603776.

It is an arithmetic number, because the mean of its divisors is an integer number (4829241477960).

Almost surely, 2^{99750775807666} is an apocalyptic number.

99750775807666 is a deficient number, since it is larger than the sum of its proper divisors (54784951487054).

99750775807666 is a wasteful number, since it uses less digits than its factorization.

99750775807666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699618.

The product of its (nonzero) digits is 8401579200, while the sum is 82.

The spelling of 99750775807666 in words is "ninety-nine trillion, seven hundred fifty billion, seven hundred seventy-five million, eight hundred seven thousand, six hundred sixty-six".