85509243004 has 6 divisors (see below), whose sum is σ = 149641175264. Its totient is φ = 42754621500.

The previous prime is 85509242983. The next prime is 85509243011. The reversal of 85509243004 is 40034290558.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10688655372 + ... + 10688655379.

Almost surely, 2^85509243004 is an apocalyptic number.

It is an amenable number.

85509243004 is a deficient number, since it is larger than the sum of its proper divisors (64131932260).

85509243004 is a wasteful number, since it uses less digits than its factorization.

85509243004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21377310755 (or 21377310753 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 85509243004 in words is "eighty-five billion, five hundred nine million, two hundred forty-three thousand, four".