13196220986881 has 2 divisors, whose sum is σ = 13196220986882. Its totient is φ = 13196220986880.

The previous prime is 13196220986833. The next prime is 13196220986917. The reversal of 13196220986881 is 18868902269131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8448811875856 + 4747409111025 = 2906684^2 + 2178855^2 .

It is an emirp because it is prime and its reverse (18868902269131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13196220986881 is a prime.

It is a super-2 number, since 2×13196220986881² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13196220986821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6598110493440 + 6598110493441.

It is an arithmetic number, because the mean of its divisors is an integer number (6598110493441).

Almost surely, 2^{13196220986881} is an apocalyptic number.

It is an amenable number.

13196220986881 is a deficient number, since it is larger than the sum of its proper divisors (1).

13196220986881 is an equidigital number, since it uses as much as digits as its factorization.

13196220986881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17915904, while the sum is 64.

The spelling of 13196220986881 in words is "thirteen trillion, one hundred ninety-six billion, two hundred twenty million, nine hundred eighty-six thousand, eight hundred eighty-one".