85800085728040 has 16 divisors (see below), whose sum is σ = 193050192888180. Its totient is φ = 34320034291200.

The previous prime is 85800085728023. The next prime is 85800085728043. The reversal of 85800085728040 is 4082758000858.

It can be written as a sum of positive squares in 2 ways, for example, as 74251275818724 + 11548809909316 = 8616918^2 + 3398354^2 .

It is not an unprimeable number, because it can be changed into a prime (85800085728043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1072501071561 + ... + 1072501071640.

Almost surely, 2^{85800085728040} is an apocalyptic number.

It is an amenable number.

85800085728040 is an abundant number, since it is smaller than the sum of its proper divisors (107250107160140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85800085728040 is a wasteful number, since it uses less digits than its factorization.

85800085728040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2145002143212 (or 2145002143208 counting only the distinct ones).

The product of its (nonzero) digits is 5734400, while the sum is 55.

The spelling of 85800085728040 in words is "eighty-five trillion, eight hundred billion, eighty-five million, seven hundred twenty-eight thousand, forty".