15340938659909 has 2 divisors, whose sum is σ = 15340938659910. Its totient is φ = 15340938659908.

The previous prime is 15340938659863. The next prime is 15340938659929. The reversal of 15340938659909 is 90995683904351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15088485672100 + 252452987809 = 3884390^2 + 502447^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15340938659909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15340938659929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7670469329954 + 7670469329955.

It is an arithmetic number, because the mean of its divisors is an integer number (7670469329955).

Almost surely, 2^{15340938659909} is an apocalyptic number.

It is an amenable number.

15340938659909 is a deficient number, since it is larger than the sum of its proper divisors (1).

15340938659909 is an equidigital number, since it uses as much as digits as its factorization.

15340938659909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 283435200, while the sum is 71.

The spelling of 15340938659909 in words is "fifteen trillion, three hundred forty billion, nine hundred thirty-eight million, six hundred fifty-nine thousand, nine hundred nine".