183061345561 has 2 divisors, whose sum is σ = 183061345562. Its totient is φ = 183061345560.

The previous prime is 183061345549. The next prime is 183061345567. The reversal of 183061345561 is 165543160381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120683286025 + 62378059536 = 347395^2 + 249756^2 .

It is an emirp because it is prime and its reverse (165543160381) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 183061345561 - 2¹⁵ = 183061312793 is a prime.

It is a super-2 number, since 2×183061345561² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (183061345567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 91530672780 + 91530672781.

It is an arithmetic number, because the mean of its divisors is an integer number (91530672781).

Almost surely, 2^183061345561 is an apocalyptic number.

It is an amenable number.

183061345561 is a deficient number, since it is larger than the sum of its proper divisors (1).

183061345561 is an equidigital number, since it uses as much as digits as its factorization.

183061345561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 183061345561 in words is "one hundred eighty-three billion, sixty-one million, three hundred forty-five thousand, five hundred sixty-one".