99940091766 has 8 divisors (see below), whose sum is σ = 199880183544. Its totient is φ = 33313363920.

The previous prime is 99940091729. The next prime is 99940091813. The reversal of 99940091766 is 66719004999.

It is a sphenic number, since it is the product of 3 distinct primes.

99940091766 is an admirable number.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8328340975 + ... + 8328340986.

It is an arithmetic number, because the mean of its divisors is an integer number (24985022943).

Almost surely, 2^99940091766 is an apocalyptic number.

99940091766 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

99940091766 is a wasteful number, since it uses less digits than its factorization.

99940091766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16656681966.

The product of its (nonzero) digits is 6613488, while the sum is 60.

The spelling of 99940091766 in words is "ninety-nine billion, nine hundred forty million, ninety-one thousand, seven hundred sixty-six".