13908321953 has 2 divisors, whose sum is σ = 13908321954. Its totient is φ = 13908321952.

The previous prime is 13908321937. The next prime is 13908321971. The reversal of 13908321953 is 35912380931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13879667344 + 28654609 = 117812^2 + 5353^2 .

It is a cyclic number.

It is not a de Polignac number, because 13908321953 - 2⁴ = 13908321937 is a prime.

It is not a weakly prime, because it can be changed into another prime (13908321923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6954160976 + 6954160977.

It is an arithmetic number, because the mean of its divisors is an integer number (6954160977).

Almost surely, 2^13908321953 is an apocalyptic number.

It is an amenable number.

13908321953 is a deficient number, since it is larger than the sum of its proper divisors (1).

13908321953 is an equidigital number, since it uses as much as digits as its factorization.

13908321953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 174960, while the sum is 44.

The spelling of 13908321953 in words is "thirteen billion, nine hundred eight million, three hundred twenty-one thousand, nine hundred fifty-three".