13803800581 has 2 divisors, whose sum is σ = 13803800582. Its totient is φ = 13803800580.

The previous prime is 13803800557. The next prime is 13803800611. The reversal of 13803800581 is 18500830831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13043695681 + 760104900 = 114209^2 + 27570^2 .

It is a cyclic number.

It is not a de Polignac number, because 13803800581 - 2⁷ = 13803800453 is a prime.

It is a super-2 number, since 2×13803800581² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13803800581.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13803801581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6901900290 + 6901900291.

It is an arithmetic number, because the mean of its divisors is an integer number (6901900291).

Almost surely, 2^13803800581 is an apocalyptic number.

It is an amenable number.

13803800581 is a deficient number, since it is larger than the sum of its proper divisors (1).

13803800581 is an equidigital number, since it uses as much as digits as its factorization.

13803800581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 37.

The spelling of 13803800581 in words is "thirteen billion, eight hundred three million, eight hundred thousand, five hundred eighty-one".