1040666451677 has 2 divisors, whose sum is σ = 1040666451678. Its totient is φ = 1040666451676.

The previous prime is 1040666451613. The next prime is 1040666451689. The reversal of 1040666451677 is 7761546660401.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 671578611001 + 369087840676 = 819499^2 + 607526^2 .

It is a cyclic number.

It is not a de Polignac number, because 1040666451677 - 2⁶ = 1040666451613 is a prime.

It is a super-2 number, since 2×1040666451677² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1040666451607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520333225838 + 520333225839.

It is an arithmetic number, because the mean of its divisors is an integer number (520333225839).

Almost surely, 2^{1040666451677} is an apocalyptic number.

It is an amenable number.

1040666451677 is a deficient number, since it is larger than the sum of its proper divisors (1).

1040666451677 is an equidigital number, since it uses as much as digits as its factorization.

1040666451677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5080320, while the sum is 53.

The spelling of 1040666451677 in words is "one trillion, forty billion, six hundred sixty-six million, four hundred fifty-one thousand, six hundred seventy-seven".