13805242501 has 2 divisors, whose sum is σ = 13805242502. Its totient is φ = 13805242500.

The previous prime is 13805242487. The next prime is 13805242559. The reversal of 13805242501 is 10524250831.

13805242501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13713581025 + 91661476 = 117105^2 + 9574^2 .

It is an emirp because it is prime and its reverse (10524250831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13805242501 - 2²⁵ = 13771688069 is a prime.

It is a super-2 number, since 2×13805242501² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13805242571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6902621250 + 6902621251.

It is an arithmetic number, because the mean of its divisors is an integer number (6902621251).

Almost surely, 2^13805242501 is an apocalyptic number.

It is an amenable number.

13805242501 is a deficient number, since it is larger than the sum of its proper divisors (1).

13805242501 is an equidigital number, since it uses as much as digits as its factorization.

13805242501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9600, while the sum is 31.

The spelling of 13805242501 in words is "thirteen billion, eight hundred five million, two hundred forty-two thousand, five hundred one".