85566851943 has 8 divisors (see below), whose sum is σ = 114406934400. Its totient is φ = 56885668728.

The previous prime is 85566851921. The next prime is 85566851983. The reversal of 85566851943 is 34915866558.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85566851943 - 2⁶ = 85566851879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85566851983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39723553 + ... + 39725706.

It is an arithmetic number, because the mean of its divisors is an integer number (14300866800).

Almost surely, 2^85566851943 is an apocalyptic number.

85566851943 is a deficient number, since it is larger than the sum of its proper divisors (28840082457).

85566851943 is a wasteful number, since it uses less digits than its factorization.

85566851943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79449621.

The product of its digits is 31104000, while the sum is 60.

The spelling of 85566851943 in words is "eighty-five billion, five hundred sixty-six million, eight hundred fifty-one thousand, nine hundred forty-three".