85415534666 has 32 divisors (see below), whose sum is σ = 160248578688. Its totient is φ = 33172439040.

The previous prime is 85415534657. The next prime is 85415534681. The reversal of 85415534666 is 66643551458.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 837815 + ... + 934218.

It is an arithmetic number, because the mean of its divisors is an integer number (5007768084).

Almost surely, 2^85415534666 is an apocalyptic number.

85415534666 is a deficient number, since it is larger than the sum of its proper divisors (74833044022).

85415534666 is a wasteful number, since it uses less digits than its factorization.

85415534666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1772366.

The product of its digits is 10368000, while the sum is 53.

The spelling of 85415534666 in words is "eighty-five billion, four hundred fifteen million, five hundred thirty-four thousand, six hundred sixty-six".