1061000255729 has 2 divisors, whose sum is σ = 1061000255730. Its totient is φ = 1061000255728.

The previous prime is 1061000255681. The next prime is 1061000255747. The reversal of 1061000255729 is 9275520001601.

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., 1024194600625 + 36805655104 = 1012025^2 + 191848^2 .

It is a cyclic number.

It is not a de Polignac number, because 1061000255729 - 2⁸ = 1061000255473 is a prime.

It is a super-2 number, since 2×1061000255729² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1061000255692 and 1061000255701.

It is not a weakly prime, because it can be changed into another prime (1061000255759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530500127864 + 530500127865.

It is an arithmetic number, because the mean of its divisors is an integer number (530500127865).

Almost surely, 2^{1061000255729} is an apocalyptic number.

It is an amenable number.

1061000255729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1061000255729 is an equidigital number, since it uses as much as digits as its factorization.

1061000255729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37800, while the sum is 38.

The spelling of 1061000255729 in words is "one trillion, sixty-one billion, two hundred fifty-five thousand, seven hundred twenty-nine".