3509357368409 has 6 divisors (see below), whose sum is σ = 3727933260174. Its totient is φ = 3302924581760.

The previous prime is 3509357368403. The next prime is 3509357368453. The reversal of 3509357368409 is 9048637539053.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 923059777600 + 2586297590809 = 960760^2 + 1608197^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3509357368409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3509357368403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6071552252 + ... + 6071552829.

It is an arithmetic number, because the mean of its divisors is an integer number (621322210029).

Almost surely, 2^{3509357368409} is an apocalyptic number.

It is an amenable number.

3509357368409 is a deficient number, since it is larger than the sum of its proper divisors (218575891765).

3509357368409 is a wasteful number, since it uses less digits than its factorization.

3509357368409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12143105115 (or 12143105098 counting only the distinct ones).

The product of its (nonzero) digits is 73483200, while the sum is 62.

The spelling of 3509357368409 in words is "three trillion, five hundred nine billion, three hundred fifty-seven million, three hundred sixty-eight thousand, four hundred nine".