85865321620466 has 16 divisors (see below), whose sum is σ = 131847677273664. Its totient is φ = 41916919997904.

The previous prime is 85865321620459. The next prime is 85865321620469. The reversal of 85865321620466 is 66402612356858.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 85865321620399 and 85865321620408.

It is not an unprimeable number, because it can be changed into a prime (85865321620469) 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, 205824221 + ... + 206240976.

It is an arithmetic number, because the mean of its divisors is an integer number (8240479829604).

Almost surely, 2^{85865321620466} is an apocalyptic number.

85865321620466 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

85865321620466 is a deficient number, since it is larger than the sum of its proper divisors (45982355653198).

85865321620466 is a wasteful number, since it uses less digits than its factorization.

85865321620466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412067665.

The product of its (nonzero) digits is 99532800, while the sum is 62.

The spelling of 85865321620466 in words is "eighty-five trillion, eight hundred sixty-five billion, three hundred twenty-one million, six hundred twenty thousand, four hundred sixty-six".