997846516361 has 2 divisors, whose sum is σ = 997846516362. Its totient is φ = 997846516360.

The previous prime is 997846516313. The next prime is 997846516421. The reversal of 997846516361 is 163615648799.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 997801210000 + 45306361 = 998900^2 + 6731^2 .

It is a cyclic number.

It is not a de Polignac number, because 997846516361 - 2¹⁴ = 997846499977 is a prime.

It is not a weakly prime, because it can be changed into another prime (997846516561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498923258180 + 498923258181.

It is an arithmetic number, because the mean of its divisors is an integer number (498923258181).

Almost surely, 2^997846516361 is an apocalyptic number.

It is an amenable number.

997846516361 is a deficient number, since it is larger than the sum of its proper divisors (1).

997846516361 is an equidigital number, since it uses as much as digits as its factorization.

997846516361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58786560, while the sum is 65.

The spelling of 997846516361 in words is "nine hundred ninety-seven billion, eight hundred forty-six million, five hundred sixteen thousand, three hundred sixty-one".