99771820366 has 8 divisors (see below), whose sum is σ = 150186557304. Its totient is φ = 49709634600.

The previous prime is 99771820339. The next prime is 99771820433. The reversal of 99771820366 is 66302817799.

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

It is a super-2 number, since 2×99771820366² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 99771820366.

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, 88137085 + ... + 88138216.

It is an arithmetic number, because the mean of its divisors is an integer number (18773319663).

Almost surely, 2^99771820366 is an apocalyptic number.

99771820366 is a deficient number, since it is larger than the sum of its proper divisors (50414736938).

99771820366 is a wasteful number, since it uses less digits than its factorization.

99771820366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176275586.

The product of its (nonzero) digits is 6858432, while the sum is 58.

The spelling of 99771820366 in words is "ninety-nine billion, seven hundred seventy-one million, eight hundred twenty thousand, three hundred sixty-six".