99944064000 has 1056 divisors, whose sum is σ = 407723097600. Its totient is φ = 24127488000.

The previous prime is 99944063987. The next prime is 99944064023. The reversal of 99944064000 is 46044999.

It is a tau number, because it is divible by the number of its divisors (1056).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 418175881 + ... + 418176119.

Almost surely, 2^99944064000 is an apocalyptic number.

99944064000 is a gapful number since it is divisible by the number (90) 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 99944064000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203861548800).

99944064000 is an abundant number, since it is smaller than the sum of its proper divisors (307779033600).

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

99944064000 is a wasteful number, since it uses less digits than its factorization.

99944064000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305 (or 260 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 99944064000 in words is "ninety-nine billion, nine hundred forty-four million, sixty-four thousand".