99906191523839 has 8 divisors (see below), whose sum is σ = 100009292548560. Its totient is φ = 99803130307200.

The previous prime is 99906191523833. The next prime is 99906191523863. The reversal of 99906191523839 is 93832519160999.

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

It is a cyclic number.

It is not a de Polignac number, because 99906191523839 - 2³² = 99901896556543 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 (99906191523833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4928732 + ... + 14970129.

It is an arithmetic number, because the mean of its divisors is an integer number (12501161568570).

Almost surely, 2^{99906191523839} is an apocalyptic number.

99906191523839 is a deficient number, since it is larger than the sum of its proper divisors (103101024721).

99906191523839 is a wasteful number, since it uses less digits than its factorization.

99906191523839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19904041.

The product of its (nonzero) digits is 255091680, while the sum is 74.

The spelling of 99906191523839 in words is "ninety-nine trillion, nine hundred six billion, one hundred ninety-one million, five hundred twenty-three thousand, eight hundred thirty-nine".