1061573726929 has 9 divisors (see below), whose sum is σ = 1063794593563. Its totient is φ = 1059357493552.

The previous prime is 1061573726911. The next prime is 1061573726957. The reversal of 1061573726929 is 9296273751601.

It is a happy number.

The square root of 1061573726929 is 1030327.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 880397507025 + 181176219904 = 938295^2 + 425648^2 .

It is not a de Polignac number, because 1061573726929 - 2¹⁷ = 1061573595857 is a prime.

It is a super-2 number, since 2×1061573726929² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1061573726989) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 740804397 + ... + 740805829.

Almost surely, 2^{1061573726929} is an apocalyptic number.

1061573726929 is the 1030327-th square number.

1061573726929 is the 515164-th centered octagonal number.

It is an amenable number.

1061573726929 is a deficient number, since it is larger than the sum of its proper divisors (2220866634).

1061573726929 is an frugal number, since it uses more digits than its factorization.

1061573726929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4304 (or 2152 counting only the distinct ones).

The product of its (nonzero) digits is 8573040, while the sum is 58.

The spelling of 1061573726929 in words is "one trillion, sixty-one billion, five hundred seventy-three million, seven hundred twenty-six thousand, nine hundred twenty-nine".