9807795761 has 2 divisors, whose sum is σ = 9807795762. Its totient is φ = 9807795760.

The previous prime is 9807795743. The next prime is 9807795787. The reversal of 9807795761 is 1675977089.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6602537536 + 3205258225 = 81256^2 + 56615^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9807795761 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9807795761.

It is not a weakly prime, because it can be changed into another prime (9807795721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4903897880 + 4903897881.

It is an arithmetic number, because the mean of its divisors is an integer number (4903897881).

Almost surely, 2^9807795761 is an apocalyptic number.

It is an amenable number.

9807795761 is a deficient number, since it is larger than the sum of its proper divisors (1).

9807795761 is an equidigital number, since it uses as much as digits as its factorization.

9807795761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6667920, while the sum is 59.

The square root of 9807795761 is about 99034.3160778121. The cubic root of 9807795761 is about 2140.5422506428.

The spelling of 9807795761 in words is "nine billion, eight hundred seven million, seven hundred ninety-five thousand, seven hundred sixty-one".