9770897789249 has 2 divisors, whose sum is σ = 9770897789250. Its totient is φ = 9770897789248.

The previous prime is 9770897789221. The next prime is 9770897789287. The reversal of 9770897789249 is 9429877980779.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9021733104400 + 749164684849 = 3003620^2 + 865543^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9770897789249 is a prime.

It is not a weakly prime, because it can be changed into another prime (9770897789749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4885448894624 + 4885448894625.

It is an arithmetic number, because the mean of its divisors is an integer number (4885448894625).

Almost surely, 2^{9770897789249} is an apocalyptic number.

It is an amenable number.

9770897789249 is a deficient number, since it is larger than the sum of its proper divisors (1).

9770897789249 is an equidigital number, since it uses as much as digits as its factorization.

9770897789249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8065516032, while the sum is 86.

The spelling of 9770897789249 in words is "nine trillion, seven hundred seventy billion, eight hundred ninety-seven million, seven hundred eighty-nine thousand, two hundred forty-nine".