19197776739241 has 2 divisors, whose sum is σ = 19197776739242. Its totient is φ = 19197776739240.

The previous prime is 19197776739233. The next prime is 19197776739377. The reversal of 19197776739241 is 14293767779191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16221561760000 + 2976214979241 = 4027600^2 + 1725171^2 .

It is a cyclic number.

It is not a de Polignac number, because 19197776739241 - 2³ = 19197776739233 is a prime.

It is not a weakly prime, because it can be changed into another prime (19197776739541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9598888369620 + 9598888369621.

It is an arithmetic number, because the mean of its divisors is an integer number (9598888369621).

Almost surely, 2^{19197776739241} is an apocalyptic number.

It is an amenable number.

19197776739241 is a deficient number, since it is larger than the sum of its proper divisors (1).

19197776739241 is an equidigital number, since it uses as much as digits as its factorization.

19197776739241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 252047376, while the sum is 73.

The spelling of 19197776739241 in words is "nineteen trillion, one hundred ninety-seven billion, seven hundred seventy-six million, seven hundred thirty-nine thousand, two hundred forty-one".