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99994143600 = 24345213435521

99994143600 has 600 divisors, whose sum is σ = 395535868112. Its totient is φ = 24037171200.

The previous prime is 99994143583. The next prime is 99994143653. The reversal of 99994143600 is 634149999.

99994143600 is a nontrivial binomial coefficient, being equal to C(447201, 2).

It is a tau number, because it is divible by the number of its divisors (600).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 18108840 + ... + 18114360.

Almost surely, 299994143600 is an apocalyptic number.

99994143600 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

99994143600 is the 447200-th triangular number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99994143600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197767934056).

99994143600 is an abundant number, since it is smaller than the sum of its proper divisors (295541724512).

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

99994143600 is a wasteful number, since it uses less digits than its factorization.

99994143600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5607 (or 5587 counting only the distinct ones).

The product of its (nonzero) digits is 1889568, while the sum is 54.

The spelling of 99994143600 in words is "ninety-nine billion, nine hundred ninety-four million, one hundred forty-three thousand, six hundred".