19686835376941 has 2 divisors, whose sum is σ = 19686835376942. Its totient is φ = 19686835376940.

The previous prime is 19686835376881. The next prime is 19686835377017. The reversal of 19686835376941 is 14967353868691.

It is an a-pointer prime, because the next prime (19686835377017) can be obtained adding 19686835376941 to its sum of digits (76).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15228952100041 + 4457883276900 = 3902429^2 + 2111370^2 .

It is a cyclic number.

It is not a de Polignac number, because 19686835376941 - 2²³ = 19686826988333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19686835376641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9843417688470 + 9843417688471.

It is an arithmetic number, because the mean of its divisors is an integer number (9843417688471).

Almost surely, 2^{19686835376941} is an apocalyptic number.

It is an amenable number.

19686835376941 is a deficient number, since it is larger than the sum of its proper divisors (1).

19686835376941 is an equidigital number, since it uses as much as digits as its factorization.

19686835376941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1410877440, while the sum is 76.

The spelling of 19686835376941 in words is "nineteen trillion, six hundred eighty-six billion, eight hundred thirty-five million, three hundred seventy-six thousand, nine hundred forty-one".