1361253666056 has 16 divisors (see below), whose sum is σ = 2584658860800. Its totient is φ = 672011303184.

The previous prime is 1361253665999. The next prime is 1361253666083. The reversal of 1361253666056 is 6506663521631.

It is a junction number, because it is equal to n+sod(n) for n = 1361253665995 and 1361253666013.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 1076940560 + ... + 1076941823.

It is an arithmetic number, because the mean of its divisors is an integer number (161541178800).

Almost surely, 2^{1361253666056} is an apocalyptic number.

It is an amenable number.

1361253666056 is a deficient number, since it is larger than the sum of its proper divisors (1223405194744).

1361253666056 is a wasteful number, since it uses less digits than its factorization.

1361253666056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2153882468 (or 2153882464 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 50.

The spelling of 1361253666056 in words is "one trillion, three hundred sixty-one billion, two hundred fifty-three million, six hundred sixty-six thousand, fifty-six".