99379720805 has 8 divisors (see below), whose sum is σ = 121035600672. Its totient is φ = 78317152848.

The previous prime is 99379720777. The next prime is 99379720879. The reversal of 99379720805 is 50802797399.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99379720805 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148327607 + ... + 148328276.

It is an arithmetic number, because the mean of its divisors is an integer number (15129450084).

Almost surely, 2^99379720805 is an apocalyptic number.

It is an amenable number.

99379720805 is a deficient number, since it is larger than the sum of its proper divisors (21655879867).

99379720805 is a wasteful number, since it uses less digits than its factorization.

99379720805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296655955.

The product of its (nonzero) digits is 8573040, while the sum is 59.

The spelling of 99379720805 in words is "ninety-nine billion, three hundred seventy-nine million, seven hundred twenty thousand, eight hundred five".