1355690246689 has 4 divisors (see below), whose sum is σ = 1402438186260. Its totient is φ = 1308942307120.

The previous prime is 1355690246681. The next prime is 1355690246711. The reversal of 1355690246689 is 9866420965531.

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 636950840464 + 718739406225 = 798092^2 + 847785^2 .

It is a cyclic number.

It is not a de Polignac number, because 1355690246689 - 2³ = 1355690246681 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1355690246689.

It is not an unprimeable number, because it can be changed into a prime (1355690246681) 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, 23373969742 + ... + 23373969799.

It is an arithmetic number, because the mean of its divisors is an integer number (350609546565).

Almost surely, 2^{1355690246689} is an apocalyptic number.

It is an amenable number.

1355690246689 is a deficient number, since it is larger than the sum of its proper divisors (46747939571).

1355690246689 is an equidigital number, since it uses as much as digits as its factorization.

1355690246689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46747939570.

The product of its (nonzero) digits is 83980800, while the sum is 64.

The spelling of 1355690246689 in words is "one trillion, three hundred fifty-five billion, six hundred ninety million, two hundred forty-six thousand, six hundred eighty-nine".