1306860188161 has 16 divisors (see below), whose sum is σ = 1426740277248. Its totient is φ = 1187159576400.

The previous prime is 1306860188149. The next prime is 1306860188219. The reversal of 1306860188161 is 1618810686031.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1306860188161 - 2⁷ = 1306860188033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1306860188111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107439466 + ... + 107451628.

It is an arithmetic number, because the mean of its divisors is an integer number (89171267328).

Almost surely, 2^{1306860188161} is an apocalyptic number.

1306860188161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1306860188161 is a deficient number, since it is larger than the sum of its proper divisors (119880089087).

1306860188161 is a wasteful number, since it uses less digits than its factorization.

1306860188161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18732.

The product of its (nonzero) digits is 331776, while the sum is 49.

The spelling of 1306860188161 in words is "one trillion, three hundred six billion, eight hundred sixty million, one hundred eighty-eight thousand, one hundred sixty-one".