99443738206 has 4 divisors (see below), whose sum is σ = 149165607312. Its totient is φ = 49721869102.

The previous prime is 99443738171. The next prime is 99443738227. The reversal of 99443738206 is 60283734499.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24860934550 + ... + 24860934553.

It is an arithmetic number, because the mean of its divisors is an integer number (37291401828).

Almost surely, 2^99443738206 is an apocalyptic number.

99443738206 is a deficient number, since it is larger than the sum of its proper divisors (49721869106).

99443738206 is a wasteful number, since it uses less digits than its factorization.

99443738206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49721869105.

The product of its (nonzero) digits is 7838208, while the sum is 55.

The spelling of 99443738206 in words is "ninety-nine billion, four hundred forty-three million, seven hundred thirty-eight thousand, two hundred six".