3946572511865 has 16 divisors (see below), whose sum is σ = 4782893354640. Its totient is φ = 3125921971200.

The previous prime is 3946572511799. The next prime is 3946572511879. The reversal of 3946572511865 is 5681152756493.

It can be written as a sum of positive squares in 8 ways, for example, as 1269615139984 + 2676957371881 = 1126772^2 + 1636141^2 .

It is not a de Polignac number, because 3946572511865 - 2¹² = 3946572507769 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3946572511798 and 3946572511807.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30279917 + ... + 30409973.

It is an arithmetic number, because the mean of its divisors is an integer number (298930834665).

Almost surely, 2^{3946572511865} is an apocalyptic number.

It is an amenable number.

3946572511865 is a deficient number, since it is larger than the sum of its proper divisors (836320842775).

3946572511865 is a wasteful number, since it uses less digits than its factorization.

3946572511865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190252.

The product of its digits is 54432000, while the sum is 62.

The spelling of 3946572511865 in words is "three trillion, nine hundred forty-six billion, five hundred seventy-two million, five hundred eleven thousand, eight hundred sixty-five".