1234344115509 has 16 divisors (see below), whose sum is σ = 1648317895488. Its totient is φ = 821633856512.

The previous prime is 1234344115507. The next prime is 1234344115513. The reversal of 1234344115509 is 9055114434321.

It is a cyclic number.

It is not a de Polignac number, because 1234344115509 - 2¹ = 1234344115507 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1234344115507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7703599 + ... + 7862195.

It is an arithmetic number, because the mean of its divisors is an integer number (103019868468).

Almost surely, 2^{1234344115509} is an apocalyptic number.

It is an amenable number.

1234344115509 is a deficient number, since it is larger than the sum of its proper divisors (413973779979).

1234344115509 is a wasteful number, since it uses less digits than its factorization.

1234344115509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162564.

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 1234344115509 in words is "one trillion, two hundred thirty-four billion, three hundred forty-four million, one hundred fifteen thousand, five hundred nine".