4065778393617 has 8 divisors (see below), whose sum is σ = 5421075029920. Its totient is φ = 2710500343200.

The previous prime is 4065778393603. The next prime is 4065778393687. The reversal of 4065778393617 is 7163938775604.

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

It is not a de Polignac number, because 4065778393617 - 2¹⁸ = 4065778131473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4065778393687) 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 7 ways as a sum of consecutive naturals, for example, 4127767 + ... + 5016972.

It is an arithmetic number, because the mean of its divisors is an integer number (677634378740).

Almost surely, 2^{4065778393617} is an apocalyptic number.

It is an amenable number.

4065778393617 is a deficient number, since it is larger than the sum of its proper divisors (1355296636303).

4065778393617 is a wasteful number, since it uses less digits than its factorization.

4065778393617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9292943.

The product of its (nonzero) digits is 160030080, while the sum is 66.

The spelling of 4065778393617 in words is "four trillion, sixty-five billion, seven hundred seventy-eight million, three hundred ninety-three thousand, six hundred seventeen".