99497887632 has 720 divisors, whose sum is σ = 353581883200. Its totient is φ = 25866086400.

The previous prime is 99497887631. The next prime is 99497887661. The reversal of 99497887632 is 23678879499.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99497887631) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 262527219 + ... + 262527597.

Almost surely, 2^99497887632 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 99497887632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176790941600).

99497887632 is an abundant number, since it is smaller than the sum of its proper divisors (254083995568).

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

99497887632 is a wasteful number, since it uses less digits than its factorization.

99497887632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508 (or 488 counting only the distinct ones).

The product of its digits is 329204736, while the sum is 72.

The spelling of 99497887632 in words is "ninety-nine billion, four hundred ninety-seven million, eight hundred eighty-seven thousand, six hundred thirty-two".