1675965857281 has 9 divisors (see below), whose sum is σ = 1731814722819. Its totient is φ = 1621863604800.

The previous prime is 1675965857261. The next prime is 1675965857297. The reversal of 1675965857281 is 1827585695761.

The square root of 1675965857281 is 1294591.

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

It can be written as a sum of positive squares in only one way, i.e., 80263681 + 1675885593600 = 8959^2 + 1294560^2 .

It is not a de Polignac number, because 1675965857281 - 2⁹ = 1675965856769 is a prime.

It is a super-2 number, since 2×1675965857281² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1675965857281.

It is not an unprimeable number, because it can be changed into a prime (1675965857201) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 40111441 + ... + 40153201.

It is an arithmetic number, because the mean of its divisors is an integer number (192423858091).

Almost surely, 2^{1675965857281} is an apocalyptic number.

1675965857281 is the 1294591-st square number.

1675965857281 is the 647296-th centered octagonal number.

It is an amenable number.

1675965857281 is a deficient number, since it is larger than the sum of its proper divisors (55848865538).

1675965857281 is an frugal number, since it uses more digits than its factorization.

1675965857281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83584 (or 41792 counting only the distinct ones).

The product of its digits is 254016000, while the sum is 70.

The spelling of 1675965857281 in words is "one trillion, six hundred seventy-five billion, nine hundred sixty-five million, eight hundred fifty-seven thousand, two hundred eighty-one".