97986118829 has 2 divisors, whose sum is σ = 97986118830. Its totient is φ = 97986118828.

The previous prime is 97986118819. The next prime is 97986118859. The reversal of 97986118829 is 92881168979.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95652262729 + 2333856100 = 309277^2 + 48310^2 .

It is an emirp because it is prime and its reverse (92881168979) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97986118829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97986118819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48993059414 + 48993059415.

It is an arithmetic number, because the mean of its divisors is an integer number (48993059415).

Almost surely, 2^97986118829 is an apocalyptic number.

It is an amenable number.

97986118829 is a deficient number, since it is larger than the sum of its proper divisors (1).

97986118829 is an equidigital number, since it uses as much as digits as its factorization.

97986118829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31352832, while the sum is 68.

The spelling of 97986118829 in words is "ninety-seven billion, nine hundred eighty-six million, one hundred eighteen thousand, eight hundred twenty-nine".