7173085520 has 20 divisors (see below), whose sum is σ = 16677424020. Its totient is φ = 2869234176.

The previous prime is 7173085487. The next prime is 7173085531. The reversal of 7173085520 is 255803717.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3531687184 + 3641398336 = 59428^2 + 60344^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44831705 + ... + 44831864.

It is an arithmetic number, because the mean of its divisors is an integer number (833871201).

Almost surely, 2^7173085520 is an apocalyptic number.

It is an amenable number.

7173085520 is an abundant number, since it is smaller than the sum of its proper divisors (9504338500).

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

7173085520 is a wasteful number, since it uses less digits than its factorization.

7173085520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89663582 (or 89663576 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 38.

The square root of 7173085520 is about 84694.0701584237. The cubic root of 7173085520 is about 1928.5696866821.

The spelling of 7173085520 in words is "seven billion, one hundred seventy-three million, eighty-five thousand, five hundred twenty".