1766226876481 has 2 divisors, whose sum is σ = 1766226876482. Its totient is φ = 1766226876480.

The previous prime is 1766226876473. The next prime is 1766226876503. The reversal of 1766226876481 is 1846786226671.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1749588198400 + 16638678081 = 1322720^2 + 128991^2 .

It is a cyclic number.

It is not a de Polignac number, because 1766226876481 - 2³ = 1766226876473 is a prime.

It is a super-2 number, since 2×1766226876481² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1766226876431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 883113438240 + 883113438241.

It is an arithmetic number, because the mean of its divisors is an integer number (883113438241).

Almost surely, 2^{1766226876481} is an apocalyptic number.

It is an amenable number.

1766226876481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1766226876481 is an equidigital number, since it uses as much as digits as its factorization.

1766226876481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 65028096, while the sum is 64.

The spelling of 1766226876481 in words is "one trillion, seven hundred sixty-six billion, two hundred twenty-six million, eight hundred seventy-six thousand, four hundred eighty-one".