73170520072 has 32 divisors (see below), whose sum is σ = 150891753600. Its totient is φ = 33052474944.

The previous prime is 73170520069. The next prime is 73170520081. The reversal of 73170520072 is 27002507137.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7479822 + ... + 7489597.

It is an arithmetic number, because the mean of its divisors is an integer number (4715367300).

Almost surely, 2^73170520072 is an apocalyptic number.

It is an amenable number.

73170520072 is an abundant number, since it is smaller than the sum of its proper divisors (77721233528).

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

73170520072 is a wasteful number, since it uses less digits than its factorization.

73170520072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14969485 (or 14969481 counting only the distinct ones).

The product of its (nonzero) digits is 20580, while the sum is 34.

The spelling of 73170520072 in words is "seventy-three billion, one hundred seventy million, five hundred twenty thousand, seventy-two".