85570728757 has 8 divisors (see below), whose sum is σ = 86263632000. Its totient is φ = 84879407184.

The previous prime is 85570728739. The next prime is 85570728779. The reversal of 85570728757 is 75782707558.

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 85570728757 - 2¹⁹ = 85570204469 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85570728695 and 85570728704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85570128757) 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, 286657 + ... + 503302.

It is an arithmetic number, because the mean of its divisors is an integer number (10782954000).

Almost surely, 2^85570728757 is an apocalyptic number.

It is an amenable number.

85570728757 is a deficient number, since it is larger than the sum of its proper divisors (692903243).

85570728757 is a wasteful number, since it uses less digits than its factorization.

85570728757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790835.

The product of its (nonzero) digits is 38416000, while the sum is 61.

The spelling of 85570728757 in words is "eighty-five billion, five hundred seventy million, seven hundred twenty-eight thousand, seven hundred fifty-seven".