1361136403663 has 4 divisors (see below), whose sum is σ = 1365248598568. Its totient is φ = 1357024208760.

The previous prime is 1361136403639. The next prime is 1361136403717. The reversal of 1361136403663 is 3663046311631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1361136403663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361136403633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2056096956 + ... + 2056097617.

It is an arithmetic number, because the mean of its divisors is an integer number (341312149642).

Almost surely, 2^{1361136403663} is an apocalyptic number.

1361136403663 is a deficient number, since it is larger than the sum of its proper divisors (4112194905).

1361136403663 is an equidigital number, since it uses as much as digits as its factorization.

1361136403663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4112194904.

The product of its (nonzero) digits is 419904, while the sum is 43.

The spelling of 1361136403663 in words is "one trillion, three hundred sixty-one billion, one hundred thirty-six million, four hundred three thousand, six hundred sixty-three".