85737173557 has 8 divisors (see below), whose sum is σ = 98063179200. Its totient is φ = 73430627424.

The previous prime is 85737173527. The next prime is 85737173573. The reversal of 85737173557 is 75537173758.

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

It is a de Polignac number, because none of the positive numbers 2^k-85737173557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85737173527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4855432 + ... + 4873057.

It is an arithmetic number, because the mean of its divisors is an integer number (12257897400).

Almost surely, 2^85737173557 is an apocalyptic number.

It is an amenable number.

85737173557 is a deficient number, since it is larger than the sum of its proper divisors (12326005643).

85737173557 is a wasteful number, since it uses less digits than its factorization.

85737173557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9729755.

The product of its digits is 21609000, while the sum is 58.

The spelling of 85737173557 in words is "eighty-five billion, seven hundred thirty-seven million, one hundred seventy-three thousand, five hundred fifty-seven".