85509243008 has 48 divisors (see below), whose sum is σ = 198162777150. Its totient is φ = 36646815744.

The previous prime is 85509242983. The next prime is 85509243011. The reversal of 85509243008 is 80034290558.

It can be written as a sum of positive squares in only one way, i.e., 62016937024 + 23492305984 = 249032^2 + 153272^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 85509243008.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6810473 + ... + 6823016.

Almost surely, 2^85509243008 is an apocalyptic number.

It is an amenable number.

85509243008 is an abundant number, since it is smaller than the sum of its proper divisors (112653534142).

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

85509243008 is a wasteful number, since it uses less digits than its factorization.

85509243008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13633517 (or 13633498 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 85509243008 in words is "eighty-five billion, five hundred nine million, two hundred forty-three thousand, eight".