75021617105 has 8 divisors (see below), whose sum is σ = 91259173032. Its totient is φ = 59195138688.

The previous prime is 75021617081. The next prime is 75021617141. The reversal of 75021617105 is 50171612057.

It can be written as a sum of positive squares in 4 ways, for example, as 23124676624 + 51896940481 = 152068^2 + 227809^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75021617105 - 2⁸ = 75021616849 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102768974 + ... + 102769703.

It is an arithmetic number, because the mean of its divisors is an integer number (11407396629).

Almost surely, 2^75021617105 is an apocalyptic number.

It is an amenable number.

75021617105 is a deficient number, since it is larger than the sum of its proper divisors (16237555927).

75021617105 is a wasteful number, since it uses less digits than its factorization.

75021617105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205538755.

The product of its (nonzero) digits is 14700, while the sum is 35.

The spelling of 75021617105 in words is "seventy-five billion, twenty-one million, six hundred seventeen thousand, one hundred five".