99633433536 has 1344 divisors, whose sum is σ = 398391644160. Its totient is φ = 23808245760.

The previous prime is 99633433481. The next prime is 99633433547. The reversal of 99633433536 is 63533433699.

It is a happy number.

99633433536 is a `hidden beast` number, since 9 + 9 + 63 + 3 + 43 + 3 + 536 = 666.

It is a tau number, because it is divible by the number of its divisors (1344).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1633334946 + ... + 1633335006.

Almost surely, 2^99633433536 is an apocalyptic number.

99633433536 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99633433536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199195822080).

99633433536 is an abundant number, since it is smaller than the sum of its proper divisors (298758210624).

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

99633433536 is a wasteful number, since it uses less digits than its factorization.

99633433536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 150 counting only the distinct ones).

The product of its digits is 14171760, while the sum is 54.

The spelling of 99633433536 in words is "ninety-nine billion, six hundred thirty-three million, four hundred thirty-three thousand, five hundred thirty-six".