1066209065476 has 81 divisors (see below), whose sum is σ = 2041663167999. Its totient is φ = 487110589056.

The previous prime is 1066209065459. The next prime is 1066209065497. The reversal of 1066209065476 is 6745609026601.

It is a happy number.

The square root of 1066209065476 is 1032574.

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 272014402500 + 794194662976 = 521550^2 + 891176^2 .

It is a super-2 number, since 2×1066209065476² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1137896080 + ... + 1137897016.

Almost surely, 2^{1066209065476} is an apocalyptic number.

1066209065476 is the 1032574-th square number.

It is an amenable number.

1066209065476 is a deficient number, since it is larger than the sum of its proper divisors (975454102523).

1066209065476 is an frugal number, since it uses more digits than its factorization.

1066209065476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1974 (or 987 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 52.

The spelling of 1066209065476 in words is "one trillion, sixty-six billion, two hundred nine million, sixty-five thousand, four hundred seventy-six".