13176853981 has 2 divisors, whose sum is σ = 13176853982. Its totient is φ = 13176853980.

The previous prime is 13176853973. The next prime is 13176853999. The reversal of 13176853981 is 18935867131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13165497081 + 11356900 = 114741^2 + 3370^2 .

It is a cyclic number.

It is not a de Polignac number, because 13176853981 - 2³ = 13176853973 is a prime.

It is a super-2 number, since 2×13176853981² (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 (13176853931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6588426990 + 6588426991.

It is an arithmetic number, because the mean of its divisors is an integer number (6588426991).

Almost surely, 2^13176853981 is an apocalyptic number.

It is an amenable number.

13176853981 is a deficient number, since it is larger than the sum of its proper divisors (1).

13176853981 is an equidigital number, since it uses as much as digits as its factorization.

13176853981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 52.

The spelling of 13176853981 in words is "thirteen billion, one hundred seventy-six million, eight hundred fifty-three thousand, nine hundred eighty-one".