3201196757981 has 2 divisors, whose sum is σ = 3201196757982. Its totient is φ = 3201196757980.

The previous prime is 3201196757923. The next prime is 3201196758017. The reversal of 3201196757981 is 1897576911023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2883034202500 + 318162555481 = 1697950^2 + 564059^2 .

It is a cyclic number.

It is not a de Polignac number, because 3201196757981 - 2³⁰ = 3200123016157 is a prime.

It is a super-2 number, since 2×3201196757981² (a number of 26 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3201196757981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3201196757911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1600598378990 + 1600598378991.

It is an arithmetic number, because the mean of its divisors is an integer number (1600598378991).

Almost surely, 2^{3201196757981} is an apocalyptic number.

It is an amenable number.

3201196757981 is a deficient number, since it is larger than the sum of its proper divisors (1).

3201196757981 is an equidigital number, since it uses as much as digits as its factorization.

3201196757981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5715360, while the sum is 59.

The spelling of 3201196757981 in words is "three trillion, two hundred one billion, one hundred ninety-six million, seven hundred fifty-seven thousand, nine hundred eighty-one".