9061744661 has 2 divisors, whose sum is σ = 9061744662. Its totient is φ = 9061744660.

The previous prime is 9061744649. The next prime is 9061744709. The reversal of 9061744661 is 1664471609.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6253804561 + 2807940100 = 79081^2 + 52990^2 .

It is a cyclic number.

It is not a de Polignac number, because 9061744661 - 2¹⁸ = 9061482517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9061744961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4530872330 + 4530872331.

It is an arithmetic number, because the mean of its divisors is an integer number (4530872331).

Almost surely, 2^9061744661 is an apocalyptic number.

It is an amenable number.

9061744661 is a deficient number, since it is larger than the sum of its proper divisors (1).

9061744661 is an equidigital number, since it uses as much as digits as its factorization.

9061744661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 9061744661 is about 95193.1965058428. The cubic root of 9061744661 is about 2084.8298036730.

The spelling of 9061744661 in words is "nine billion, sixty-one million, seven hundred forty-four thousand, six hundred sixty-one".