85708128328 has 16 divisors (see below), whose sum is σ = 160727989500. Its totient is φ = 42847331136.

The previous prime is 85708128301. The next prime is 85708128347. The reversal of 85708128328 is 82382180758.

It can be written as a sum of positive squares in 2 ways, for example, as 85391359524 + 316768804 = 292218^2 + 17798^2 .

It is a super-2 number, since 2×85708128328² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 787323 + ... + 889546.

Almost surely, 2^85708128328 is an apocalyptic number.

It is an amenable number.

85708128328 is a deficient number, since it is larger than the sum of its proper divisors (75019861172).

85708128328 is a wasteful number, since it uses less digits than its factorization.

85708128328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1683264 (or 1683260 counting only the distinct ones).

The product of its (nonzero) digits is 1720320, while the sum is 52.

The spelling of 85708128328 in words is "eighty-five billion, seven hundred eight million, one hundred twenty-eight thousand, three hundred twenty-eight".