13884851557 has 2 divisors, whose sum is σ = 13884851558. Its totient is φ = 13884851556.

The previous prime is 13884851551. The next prime is 13884851567. The reversal of 13884851557 is 75515848831.

13884851557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 117834²+1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13884851556 + 1 = 117834^2 + 1^2 .

It is an emirp because it is prime and its reverse (75515848831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13884851557 - 2³ = 13884851549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13884851498 and 13884851507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13884851551) 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, 6942425778 + 6942425779.

It is an arithmetic number, because the mean of its divisors is an integer number (6942425779).

Almost surely, 2^13884851557 is an apocalyptic number.

It is an amenable number.

13884851557 is a deficient number, since it is larger than the sum of its proper divisors (1).

13884851557 is an equidigital number, since it uses as much as digits as its factorization.

13884851557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376000, while the sum is 55.

The spelling of 13884851557 in words is "thirteen billion, eight hundred eighty-four million, eight hundred fifty-one thousand, five hundred fifty-seven".