13815539953 has 2 divisors, whose sum is σ = 13815539954. Its totient is φ = 13815539952.

The previous prime is 13815539929. The next prime is 13815539981. The reversal of 13815539953 is 35993551831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13681513024 + 134026929 = 116968^2 + 11577^2 .

It is an emirp because it is prime and its reverse (35993551831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13815539953 - 2²¹ = 13813442801 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13815539953.

It is not a weakly prime, because it can be changed into another prime (13815531953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6907769976 + 6907769977.

It is an arithmetic number, because the mean of its divisors is an integer number (6907769977).

Almost surely, 2^13815539953 is an apocalyptic number.

It is an amenable number.

13815539953 is a deficient number, since it is larger than the sum of its proper divisors (1).

13815539953 is an equidigital number, since it uses as much as digits as its factorization.

13815539953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2187000, while the sum is 52.

The spelling of 13815539953 in words is "thirteen billion, eight hundred fifteen million, five hundred thirty-nine thousand, nine hundred fifty-three".