9972557707349 has 2 divisors, whose sum is σ = 9972557707350. Its totient is φ = 9972557707348.

The previous prime is 9972557707327. The next prime is 9972557707361. The reversal of 9972557707349 is 9437077552799.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8657423522500 + 1315134184849 = 2942350^2 + 1146793^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9972557707349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9972557704349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4986278853674 + 4986278853675.

It is an arithmetic number, because the mean of its divisors is an integer number (4986278853675).

Almost surely, 2^{9972557707349} is an apocalyptic number.

It is an amenable number.

9972557707349 is a deficient number, since it is larger than the sum of its proper divisors (1).

9972557707349 is an equidigital number, since it uses as much as digits as its factorization.

9972557707349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1050197400, while the sum is 74.

The spelling of 9972557707349 in words is "nine trillion, nine hundred seventy-two billion, five hundred fifty-seven million, seven hundred seven thousand, three hundred forty-nine".