98765315993 has 2 divisors, whose sum is σ = 98765315994. Its totient is φ = 98765315992.

The previous prime is 98765315981. The next prime is 98765316011. The reversal of 98765315993 is 39951356789.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83412371344 + 15352944649 = 288812^2 + 123907^2 .

It is an emirp because it is prime and its reverse (39951356789) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98765315993 - 2¹⁴ = 98765299609 is a prime.

It is not a weakly prime, because it can be changed into another prime (98765315903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49382657996 + 49382657997.

It is an arithmetic number, because the mean of its divisors is an integer number (49382657997).

Almost surely, 2^98765315993 is an apocalyptic number.

It is an amenable number.

98765315993 is a deficient number, since it is larger than the sum of its proper divisors (1).

98765315993 is an equidigital number, since it uses as much as digits as its factorization.

98765315993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55112400, while the sum is 65.

The spelling of 98765315993 in words is "ninety-eight billion, seven hundred sixty-five million, three hundred fifteen thousand, nine hundred ninety-three".