73943199840 has 192 divisors, whose sum is σ = 247114506240. Its totient is φ = 18533007360.

The previous prime is 73943199787. The next prime is 73943199851. The reversal of 73943199840 is 4899134937.

It is a Harshad number since it is a multiple of its sum of digits (57).

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 31 ways as a sum of consecutive naturals, for example, 1126320 + ... + 1190160.

It is an arithmetic number, because the mean of its divisors is an integer number (1287054720).

Almost surely, 2^73943199840 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 73943199840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123557253120).

73943199840 is an abundant number, since it is smaller than the sum of its proper divisors (173171306400).

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

73943199840 is a wasteful number, since it uses less digits than its factorization.

73943199840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64005 (or 63997 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 57.

The spelling of 73943199840 in words is "seventy-three billion, nine hundred forty-three million, one hundred ninety-nine thousand, eight hundred forty".