1061566034561 has 4 divisors (see below), whose sum is σ = 1095810100224. Its totient is φ = 1027321968900.

The previous prime is 1061566034537. The next prime is 1061566034567. The reversal of 1061566034561 is 1654306651601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1061566034561 is a prime.

It is a super-2 number, since 2×1061566034561² (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 (1061566034567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17122032785 + ... + 17122032846.

It is an arithmetic number, because the mean of its divisors is an integer number (273952525056).

Almost surely, 2^{1061566034561} is an apocalyptic number.

It is an amenable number.

1061566034561 is a deficient number, since it is larger than the sum of its proper divisors (34244065663).

1061566034561 is an equidigital number, since it uses as much as digits as its factorization.

1061566034561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34244065662.

The product of its (nonzero) digits is 388800, while the sum is 44.

The spelling of 1061566034561 in words is "one trillion, sixty-one billion, five hundred sixty-six million, thirty-four thousand, five hundred sixty-one".