395728299943765 has 8 divisors (see below), whose sum is σ = 474896066758488. Its totient is φ = 316567902071040.

The previous prime is 395728299943747. The next prime is 395728299943771. The reversal of 395728299943765 is 567349992827593.

It can be written as a sum of positive squares in 4 ways, for example, as 159317963782884 + 236410336160881 = 12622122^2 + 15375641^2 .

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

It is not a de Polignac number, because 395728299943765 - 2¹⁹ = 395728299419477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1842117352 + ... + 1842332161.

It is an arithmetic number, because the mean of its divisors is an integer number (59362008344811).

Almost surely, 2^{395728299943765} is an apocalyptic number.

It is an amenable number.

395728299943765 is a deficient number, since it is larger than the sum of its proper divisors (79167766814723).

395728299943765 is a wasteful number, since it uses less digits than its factorization.

395728299943765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3684470999.

The product of its digits is 55553299200, while the sum is 88.

The spelling of 395728299943765 in words is "three hundred ninety-five trillion, seven hundred twenty-eight billion, two hundred ninety-nine million, nine hundred forty-three thousand, seven hundred sixty-five".