99523538717 has 16 divisors (see below), whose sum is σ = 105989783040. Its totient is φ = 93251441712.

The previous prime is 99523538713. The next prime is 99523538813. The reversal of 99523538717 is 71783532599.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 99523538717 - 2² = 99523538713 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 (99523538713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95438 + ... + 456240.

It is an arithmetic number, because the mean of its divisors is an integer number (6624361440).

Almost surely, 2^99523538717 is an apocalyptic number.

It is an amenable number.

99523538717 is a deficient number, since it is larger than the sum of its proper divisors (6466244323).

99523538717 is a wasteful number, since it uses less digits than its factorization.

99523538717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361072.

The product of its digits is 14288400, while the sum is 59.

The spelling of 99523538717 in words is "ninety-nine billion, five hundred twenty-three million, five hundred thirty-eight thousand, seven hundred seventeen".