73171352728 has 8 divisors (see below), whose sum is σ = 137196286380. Its totient is φ = 36585676360.

The previous prime is 73171352719. The next prime is 73171352731. The reversal of 73171352728 is 82725317137.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4573209538 + ... + 4573209553.

Almost surely, 2^73171352728 is an apocalyptic number.

It is an amenable number.

73171352728 is a deficient number, since it is larger than the sum of its proper divisors (64024933652).

73171352728 is a wasteful number, since it uses less digits than its factorization.

73171352728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9146419097 (or 9146419093 counting only the distinct ones).

The product of its digits is 493920, while the sum is 46.

The spelling of 73171352728 in words is "seventy-three billion, one hundred seventy-one million, three hundred fifty-two thousand, seven hundred twenty-eight".