99541386918928 has 20 divisors (see below), whose sum is σ = 192980414033068. Its totient is φ = 49739989749120.

The previous prime is 99541386918893. The next prime is 99541386918947. The reversal of 99541386918928 is 82981968314599.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 35347448218384 + 64193938700544 = 5945372^2 + 8012112^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1918955151 + ... + 1919007022.

Almost surely, 2^{99541386918928} is an apocalyptic number.

It is an amenable number.

99541386918928 is a deficient number, since it is larger than the sum of its proper divisors (93439027114140).

99541386918928 is a wasteful number, since it uses less digits than its factorization.

99541386918928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3837963802 (or 3837963796 counting only the distinct ones).

The product of its digits is 2418647040, while the sum is 82.

The spelling of 99541386918928 in words is "ninety-nine trillion, five hundred forty-one billion, three hundred eighty-six million, nine hundred eighteen thousand, nine hundred twenty-eight".