85515540606 has 48 divisors (see below), whose sum is σ = 202511207808. Its totient is φ = 25962969600.

The previous prime is 85515540587. The next prime is 85515540641. The reversal of 85515540606 is 60604551558.

85515540606 is a `hidden beast` number, since 8 + 551 + 55 + 40 + 6 + 0 + 6 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4497975 + ... + 4516946.

It is an arithmetic number, because the mean of its divisors is an integer number (4218983496).

Almost surely, 2^85515540606 is an apocalyptic number.

85515540606 is an abundant number, since it is smaller than the sum of its proper divisors (116995667202).

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

85515540606 is a wasteful number, since it uses less digits than its factorization.

85515540606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9014977 (or 9014974 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 45.

The spelling of 85515540606 in words is "eighty-five billion, five hundred fifteen million, five hundred forty thousand, six hundred six".