23105011461661 has 2 divisors, whose sum is σ = 23105011461662. Its totient is φ = 23105011461660.

The previous prime is 23105011461601. The next prime is 23105011461689. The reversal of 23105011461661 is 16616411050132.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19471435896025 + 3633575565636 = 4412645^2 + 1906194^2 .

It is a cyclic number.

It is not a de Polignac number, because 23105011461661 - 2¹⁹ = 23105010937373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23105011461661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23105011461601) 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 as a sum of consecutive naturals, namely, 11552505730830 + 11552505730831.

It is an arithmetic number, because the mean of its divisors is an integer number (11552505730831).

Almost surely, 2^{23105011461661} is an apocalyptic number.

It is an amenable number.

23105011461661 is a deficient number, since it is larger than the sum of its proper divisors (1).

23105011461661 is an equidigital number, since it uses as much as digits as its factorization.

23105011461661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 23105011461661 in words is "twenty-three trillion, one hundred five billion, eleven million, four hundred sixty-one thousand, six hundred sixty-one".