85901043666 has 32 divisors (see below), whose sum is σ = 177771565440. Its totient is φ = 27639271296.

The previous prime is 85901043647. The next prime is 85901043689. The reversal of 85901043666 is 66634010958.

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, 645075 + ... + 766761.

It is an arithmetic number, because the mean of its divisors is an integer number (5555361420).

Almost surely, 2^85901043666 is an apocalyptic number.

85901043666 is an abundant number, since it is smaller than the sum of its proper divisors (91870521774).

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

85901043666 is a wasteful number, since it uses less digits than its factorization.

85901043666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125778.

The product of its (nonzero) digits is 933120, while the sum is 48.

The spelling of 85901043666 in words is "eighty-five billion, nine hundred one million, forty-three thousand, six hundred sixty-six".