85561319806 has 8 divisors (see below), whose sum is σ = 128878976160. Its totient is φ = 42601661088.

The previous prime is 85561319771. The next prime is 85561319839. The reversal of 85561319806 is 60891316558.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89498811 + ... + 89499766.

It is an arithmetic number, because the mean of its divisors is an integer number (16109872020).

Almost surely, 2^85561319806 is an apocalyptic number.

85561319806 is a deficient number, since it is larger than the sum of its proper divisors (43317656354).

85561319806 is a wasteful number, since it uses less digits than its factorization.

85561319806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178998818.

The product of its (nonzero) digits is 1555200, while the sum is 52.

The spelling of 85561319806 in words is "eighty-five billion, five hundred sixty-one million, three hundred nineteen thousand, eight hundred six".