9791116613749 has 2 divisors, whose sum is σ = 9791116613750. Its totient is φ = 9791116613748.

The previous prime is 9791116613723. The next prime is 9791116613857. The reversal of 9791116613749 is 9473166111979.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8428744432900 + 1362372180849 = 2903230^2 + 1167207^2 .

It is a cyclic number.

It is not a de Polignac number, because 9791116613749 - 2³⁵ = 9756756875381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9791116313749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4895558306874 + 4895558306875.

It is an arithmetic number, because the mean of its divisors is an integer number (4895558306875).

Almost surely, 2^{9791116613749} is an apocalyptic number.

It is an amenable number.

9791116613749 is a deficient number, since it is larger than the sum of its proper divisors (1).

9791116613749 is an equidigital number, since it uses as much as digits as its factorization.

9791116613749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15431472, while the sum is 64.

The spelling of 9791116613749 in words is "nine trillion, seven hundred ninety-one billion, one hundred sixteen million, six hundred thirteen thousand, seven hundred forty-nine".