13905540073 has 2 divisors, whose sum is σ = 13905540074. Its totient is φ = 13905540072.

The previous prime is 13905540023. The next prime is 13905540137. The reversal of 13905540073 is 37004550931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13264589584 + 640950489 = 115172^2 + 25317^2 .

It is an emirp because it is prime and its reverse (37004550931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13905540073 - 2⁹ = 13905539561 is a prime.

It is not a weakly prime, because it can be changed into another prime (13905540023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6952770036 + 6952770037.

It is an arithmetic number, because the mean of its divisors is an integer number (6952770037).

Almost surely, 2^13905540073 is an apocalyptic number.

It is an amenable number.

13905540073 is a deficient number, since it is larger than the sum of its proper divisors (1).

13905540073 is an equidigital number, since it uses as much as digits as its factorization.

13905540073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56700, while the sum is 37.

The spelling of 13905540073 in words is "thirteen billion, nine hundred five million, five hundred forty thousand, seventy-three".