1355826340917 has 12 divisors (see below), whose sum is σ = 1958448192844. Its totient is φ = 903869288640.

The previous prime is 1355826340861. The next prime is 1355826340927. The reversal of 1355826340917 is 7190436285531.

It is a happy number.

1355826340917 is a `hidden beast` number, since 1 + 3 + 5 + 582 + 6 + 3 + 40 + 9 + 17 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 784276732836 + 571549608081 = 885594^2 + 756009^2 .

It is not a de Polignac number, because 1355826340917 - 2⁶ = 1355826340853 is a prime.

It is a super-2 number, since 2×1355826340917² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355826340927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 655384 + ... + 1772337.

It is a 1-persistent number, because it is pandigital, but 2⋅1355826340917 = 2711652681834 is not.

Almost surely, 2^{1355826340917} is an apocalyptic number.

It is an amenable number.

1355826340917 is a deficient number, since it is larger than the sum of its proper divisors (602621851927).

1355826340917 is a wasteful number, since it uses less digits than its factorization.

1355826340917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2489780 (or 2489777 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

The spelling of 1355826340917 in words is "one trillion, three hundred fifty-five billion, eight hundred twenty-six million, three hundred forty thousand, nine hundred seventeen".