75085111202561 has 4 divisors (see below), whose sum is σ = 75399274848000. Its totient is φ = 74770947557124.

The previous prime is 75085111202539. The next prime is 75085111202567. The reversal of 75085111202561 is 16520211158057.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 75085111202561 - 2¹⁰ = 75085111201537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75085111202567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157081822361 + ... + 157081822838.

It is an arithmetic number, because the mean of its divisors is an integer number (18849818712000).

Almost surely, 2^{75085111202561} is an apocalyptic number.

It is an amenable number.

75085111202561 is a deficient number, since it is larger than the sum of its proper divisors (314163645439).

75085111202561 is a wasteful number, since it uses less digits than its factorization.

75085111202561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314163645438.

The product of its (nonzero) digits is 168000, while the sum is 44.

The spelling of 75085111202561 in words is "seventy-five trillion, eighty-five billion, one hundred eleven million, two hundred two thousand, five hundred sixty-one".