85291565000 has 40 divisors (see below), whose sum is σ = 199838148510. Its totient is φ = 34116624000.

The previous prime is 85291564979. The next prime is 85291565059. The reversal of 85291565000 is 56519258.

It can be written as a sum of positive squares in 5 ways, for example, as 13412882596 + 71878682404 = 115814^2 + 268102^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8524157 + ... + 8534156.

Almost surely, 2^85291565000 is an apocalyptic number.

It is an amenable number.

85291565000 is an abundant number, since it is smaller than the sum of its proper divisors (114546583510).

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

85291565000 is a wasteful number, since it uses less digits than its factorization.

85291565000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17058339 (or 17058320 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 41.

The spelling of 85291565000 in words is "eighty-five billion, two hundred ninety-one million, five hundred sixty-five thousand".