73689730128 has 80 divisors (see below), whose sum is σ = 241733516160. Its totient is φ = 21054207744.

The previous prime is 73689730117. The next prime is 73689730129. The reversal of 73689730128 is 82103798637.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73689730129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12181125 + ... + 12187172.

It is an arithmetic number, because the mean of its divisors is an integer number (3021668952).

Almost surely, 2^73689730128 is an apocalyptic number.

It is an amenable number.

73689730128 is an abundant number, since it is smaller than the sum of its proper divisors (168043786032).

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

73689730128 is a wasteful number, since it uses less digits than its factorization.

73689730128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24368321 (or 24368309 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The spelling of 73689730128 in words is "seventy-three billion, six hundred eighty-nine million, seven hundred thirty thousand, one hundred twenty-eight".