85045173757 has 4 divisors (see below), whose sum is σ = 86486617440. Its totient is φ = 83603730076.

The previous prime is 85045173751. The next prime is 85045173767. The reversal of 85045173757 is 75737154058.

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 85045173757 - 2¹⁵ = 85045140989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85045173751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 720721753 + ... + 720721870.

It is an arithmetic number, because the mean of its divisors is an integer number (21621654360).

Almost surely, 2^85045173757 is an apocalyptic number.

It is an amenable number.

85045173757 is a deficient number, since it is larger than the sum of its proper divisors (1441443683).

85045173757 is a wasteful number, since it uses less digits than its factorization.

85045173757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1441443682.

The product of its (nonzero) digits is 4116000, while the sum is 52.

The spelling of 85045173757 in words is "eighty-five billion, forty-five million, one hundred seventy-three thousand, seven hundred fifty-seven".