73163640000 has 560 divisors, whose sum is σ = 270232997760. Its totient is φ = 17310720000.

The previous prime is 73163639987. The next prime is 73163640023. The reversal of 73163640000 is 4636137.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a self number, because there is not a number n which added to its sum of digits gives 73163640000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 56759356 + ... + 56760644.

Almost surely, 2^73163640000 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 73163640000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135116498880).

73163640000 is an abundant number, since it is smaller than the sum of its proper divisors (197069357760).

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

73163640000 is a wasteful number, since it uses less digits than its factorization.

73163640000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378 (or 1353 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 30.

The spelling of 73163640000 in words is "seventy-three billion, one hundred sixty-three million, six hundred forty thousand".