1361563765369 has 4 divisors (see below), whose sum is σ = 1361577444480. Its totient is φ = 1361550086260.

The previous prime is 1361563765339. The next prime is 1361563765381. The reversal of 1361563765369 is 9635673651631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1361563765369 - 2⁵ = 1361563765337 is a prime.

It is a super-2 number, since 2×1361563765369² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1361563765339) 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 3 ways as a sum of consecutive naturals, for example, 6689149 + ... + 6889690.

It is an arithmetic number, because the mean of its divisors is an integer number (340394361120).

Almost surely, 2^{1361563765369} is an apocalyptic number.

It is an amenable number.

1361563765369 is a deficient number, since it is larger than the sum of its proper divisors (13679111).

1361563765369 is a wasteful number, since it uses less digits than its factorization.

1361563765369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13679110.

The product of its digits is 55112400, while the sum is 61.

The spelling of 1361563765369 in words is "one trillion, three hundred sixty-one billion, five hundred sixty-three million, seven hundred sixty-five thousand, three hundred sixty-nine".