1361253666055 has 16 divisors (see below), whose sum is σ = 1674535874400. Its totient is φ = 1061900731008.

The previous prime is 1361253665999. The next prime is 1361253666083. The reversal of 1361253666055 is 5506663521631.

It is a cyclic number.

It is not a de Polignac number, because 1361253666055 - 2⁹ = 1361253665543 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 15713880 + ... + 15800269.

It is an arithmetic number, because the mean of its divisors is an integer number (104658492150).

Almost surely, 2^{1361253666055} is an apocalyptic number.

1361253666055 is a deficient number, since it is larger than the sum of its proper divisors (313282208345).

1361253666055 is a wasteful number, since it uses less digits than its factorization.

1361253666055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31514370.

The product of its (nonzero) digits is 2916000, while the sum is 49.

The spelling of 1361253666055 in words is "one trillion, three hundred sixty-one billion, two hundred fifty-three million, six hundred sixty-six thousand, fifty-five".