1061573726989 has 2 divisors, whose sum is σ = 1061573726990. Its totient is φ = 1061573726988.

The previous prime is 1061573726971. The next prime is 1061573727041. The reversal of 1061573726989 is 9896273751601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 707003497225 + 354570229764 = 840835^2 + 595458^2 .

It is an emirp because it is prime and its reverse (9896273751601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1061573726989 - 2⁵ = 1061573726957 is a prime.

It is a super-2 number, since 2×1061573726989² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1061573726989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1061573724989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530786863494 + 530786863495.

It is an arithmetic number, because the mean of its divisors is an integer number (530786863495).

Almost surely, 2^{1061573726989} is an apocalyptic number.

It is an amenable number.

1061573726989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1061573726989 is an equidigital number, since it uses as much as digits as its factorization.

1061573726989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34292160, while the sum is 64.

The spelling of 1061573726989 in words is "one trillion, sixty-one billion, five hundred seventy-three million, seven hundred twenty-six thousand, nine hundred eighty-nine".