85166768506 has 8 divisors (see below), whose sum is σ = 127771680960. Its totient is φ = 42576208188.

The previous prime is 85166768501. The next prime is 85166768527. The reversal of 85166768506 is 60586766158.

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

It is not an unprimeable number, because it can be changed into a prime (85166768501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3573186 + ... + 3596941.

It is an arithmetic number, because the mean of its divisors is an integer number (15971460120).

Almost surely, 2^85166768506 is an apocalyptic number.

85166768506 is a deficient number, since it is larger than the sum of its proper divisors (42604912454).

85166768506 is a wasteful number, since it uses less digits than its factorization.

85166768506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7176068.

The product of its (nonzero) digits is 14515200, while the sum is 58.

The spelling of 85166768506 in words is "eighty-five billion, one hundred sixty-six million, seven hundred sixty-eight thousand, five hundred six".