1363786853561 has 8 divisors (see below), whose sum is σ = 1492520731104. Its totient is φ = 1235845185120.

The previous prime is 1363786853551. The next prime is 1363786853563. The reversal of 1363786853561 is 1653586873631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1363786853561 - 2¹⁴ = 1363786837177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1363786853494 and 1363786853503.

It is not an unprimeable number, because it can be changed into a prime (1363786853563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198048671 + ... + 198055556.

It is an arithmetic number, because the mean of its divisors is an integer number (186565091388).

Almost surely, 2^{1363786853561} is an apocalyptic number.

1363786853561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1363786853561 is a deficient number, since it is larger than the sum of its proper divisors (128733877543).

1363786853561 is a wasteful number, since it uses less digits than its factorization.

1363786853561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396104551.

The product of its digits is 65318400, while the sum is 62.

The spelling of 1363786853561 in words is "one trillion, three hundred sixty-three billion, seven hundred eighty-six million, eight hundred fifty-three thousand, five hundred sixty-one".