99191732536 has 64 divisors (see below), whose sum is σ = 204063501600. Its totient is φ = 44922124800.

The previous prime is 99191732531. The next prime is 99191732537. The reversal of 99191732536 is 63523719199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99191732531) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2652255 + ... + 2689393.

Almost surely, 2^99191732536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99191732536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102031750800).

99191732536 is an abundant number, since it is smaller than the sum of its proper divisors (104871769064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99191732536 is a wasteful number, since it uses less digits than its factorization.

99191732536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37640 (or 37636 counting only the distinct ones).

The product of its digits is 2755620, while the sum is 55.

The spelling of 99191732536 in words is "ninety-nine billion, one hundred ninety-one million, seven hundred thirty-two thousand, five hundred thirty-six".