394176680065 has 16 divisors (see below), whose sum is σ = 540615363840. Its totient is φ = 270277479360.

The previous prime is 394176680033. The next prime is 394176680101. The reversal of 394176680065 is 560086671493.

It is not a de Polignac number, because 394176680065 - 2⁵ = 394176680033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 394176679988 and 394176680015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 339975 + ... + 950755.

It is an arithmetic number, because the mean of its divisors is an integer number (33788460240).

Almost surely, 2^394176680065 is an apocalyptic number.

394176680065 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

394176680065 is a deficient number, since it is larger than the sum of its proper divisors (146438683775).

394176680065 is a wasteful number, since it uses less digits than its factorization.

394176680065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629232.

The product of its (nonzero) digits is 6531840, while the sum is 55.

The spelling of 394176680065 in words is "three hundred ninety-four billion, one hundred seventy-six million, six hundred eighty thousand, sixty-five".