4390571246161 has 45 divisors (see below), whose sum is σ = 4897050144721. Its totient is φ = 3935672922368.

The previous prime is 4390571246129. The next prime is 4390571246179. The reversal of 4390571246161 is 1616421750934.

The square root of 4390571246161 is 2095369.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 2216620561 + 4388354625600 = 47081^2 + 2094840^2 .

It is not a de Polignac number, because 4390571246161 - 2⁵ = 4390571246129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4390571246561) 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 44 ways as a sum of consecutive naturals, for example, 18843653301 + ... + 18843653533.

Almost surely, 2^{4390571246161} is an apocalyptic number.

4390571246161 is the 2095369-th square number.

4390571246161 is the 1047685-th centered octagonal number.

It is an amenable number.

4390571246161 is a deficient number, since it is larger than the sum of its proper divisors (506478898560).

4390571246161 is an frugal number, since it uses more digits than its factorization.

4390571246161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 49.

Multiplying 4390571246161 by its sum of digits (49), we get a square (215137991061889 = 14667583²).

The spelling of 4390571246161 in words is "four trillion, three hundred ninety billion, five hundred seventy-one million, two hundred forty-six thousand, one hundred sixty-one".