1356669371369 has 8 divisors (see below), whose sum is σ = 1511408849160. Its totient is φ = 1209127078656.

The previous prime is 1356669371357. The next prime is 1356669371381. The reversal of 1356669371369 is 9631739666531.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1356669371357) and next prime (1356669371381).

It can be written as a sum of positive squares in 4 ways, for example, as 105768048400 + 1250901322969 = 325220^2 + 1118437^2 .

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 1356669371369 - 2⁴ = 1356669371353 is a prime.

It is a super-2 number, since 2×1356669371369² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1356669371399) 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, 1799295872 + ... + 1799296625.

It is an arithmetic number, because the mean of its divisors is an integer number (188926106145).

Almost surely, 2^{1356669371369} is an apocalyptic number.

It is an amenable number.

1356669371369 is a deficient number, since it is larger than the sum of its proper divisors (154739477791).

1356669371369 is a wasteful number, since it uses less digits than its factorization.

1356669371369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3598592539.

The product of its digits is 99202320, while the sum is 65.

The spelling of 1356669371369 in words is "one trillion, three hundred fifty-six billion, six hundred sixty-nine million, three hundred seventy-one thousand, three hundred sixty-nine".