1356667811369 has 4 divisors (see below), whose sum is σ = 1461026873796. Its totient is φ = 1252308748944.

The previous prime is 1356667811363. The next prime is 1356667811393. The reversal of 1356667811369 is 9631187666531.

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

It can be written as a sum of positive squares in 2 ways, for example, as 203750223769 + 1152917587600 = 451387^2 + 1073740^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1356667811369 is a prime.

It is a super-2 number, since 2×1356667811369² (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 (1356667811363) 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, 52179531194 + ... + 52179531219.

It is an arithmetic number, because the mean of its divisors is an integer number (365256718449).

Almost surely, 2^{1356667811369} is an apocalyptic number.

It is an amenable number.

1356667811369 is a deficient number, since it is larger than the sum of its proper divisors (104359062427).

1356667811369 is a wasteful number, since it uses less digits than its factorization.

1356667811369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104359062426.

The product of its digits is 29393280, while the sum is 62.

The spelling of 1356667811369 in words is "one trillion, three hundred fifty-six billion, six hundred sixty-seven million, eight hundred eleven thousand, three hundred sixty-nine".