13486819081 has 2 divisors, whose sum is σ = 13486819082. Its totient is φ = 13486819080.

The previous prime is 13486819079. The next prime is 13486819121. The reversal of 13486819081 is 18091868431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12481358400 + 1005460681 = 111720^2 + 31709^2 .

It is a cyclic number.

It is not a de Polignac number, because 13486819081 - 2¹ = 13486819079 is a prime.

It is a super-2 number, since 2×13486819081² (a number of 21 digits) contains 22 as substring.

Together with 13486819079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (13486819061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6743409540 + 6743409541.

It is an arithmetic number, because the mean of its divisors is an integer number (6743409541).

Almost surely, 2^13486819081 is an apocalyptic number.

It is an amenable number.

13486819081 is a deficient number, since it is larger than the sum of its proper divisors (1).

13486819081 is an equidigital number, since it uses as much as digits as its factorization.

13486819081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 49.

The spelling of 13486819081 in words is "thirteen billion, four hundred eighty-six million, eight hundred nineteen thousand, eighty-one".