1066610022517 has 4 divisors (see below), whose sum is σ = 1148656947340. Its totient is φ = 984563097696.

The previous prime is 1066610022487. The next prime is 1066610022539. The reversal of 1066610022517 is 7152200166601.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 680271945796 + 386338076721 = 824786^2 + 621561^2 .

It is a cyclic number.

It is not a de Polignac number, because 1066610022517 - 2¹⁵ = 1066609989749 is a prime.

It is a super-2 number, since 2×1066610022517² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066610022587) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41023462392 + ... + 41023462417.

It is an arithmetic number, because the mean of its divisors is an integer number (287164236835).

Almost surely, 2^{1066610022517} is an apocalyptic number.

It is an amenable number.

1066610022517 is a deficient number, since it is larger than the sum of its proper divisors (82046924823).

1066610022517 is an equidigital number, since it uses as much as digits as its factorization.

1066610022517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82046924822.

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 1066610022517 in words is "one trillion, sixty-six billion, six hundred ten million, twenty-two thousand, five hundred seventeen".