99700029991 has 4 divisors (see below), whose sum is σ = 99701959000. Its totient is φ = 99698100984.

The previous prime is 99700029977. The next prime is 99700030013. The reversal of 99700029991 is 19992000799.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 99700029991 - 2⁵ = 99700029959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99700029901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 884781 + ... + 991078.

It is an arithmetic number, because the mean of its divisors is an integer number (24925489750).

Almost surely, 2^99700029991 is an apocalyptic number.

99700029991 is a deficient number, since it is larger than the sum of its proper divisors (1929009).

99700029991 is a wasteful number, since it uses less digits than its factorization.

99700029991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1929008.

The product of its (nonzero) digits is 826686, while the sum is 55.

The spelling of 99700029991 in words is "ninety-nine billion, seven hundred million, twenty-nine thousand, nine hundred ninety-one".