98917168993 has 2 divisors, whose sum is σ = 98917168994. Its totient is φ = 98917168992.

The previous prime is 98917168979. The next prime is 98917169009. The reversal of 98917168993 is 39986171989.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60308062929 + 38609106064 = 245577^2 + 196492^2 .

It is a cyclic number.

It is not a de Polignac number, because 98917168993 - 2¹³ = 98917160801 is a prime.

It is not a weakly prime, because it can be changed into another prime (98917168943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49458584496 + 49458584497.

It is an arithmetic number, because the mean of its divisors is an integer number (49458584497).

Almost surely, 2^98917168993 is an apocalyptic number.

It is an amenable number.

98917168993 is a deficient number, since it is larger than the sum of its proper divisors (1).

98917168993 is an equidigital number, since it uses as much as digits as its factorization.

98917168993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52907904, while the sum is 70.

The spelling of 98917168993 in words is "ninety-eight billion, nine hundred seventeen million, one hundred sixty-eight thousand, nine hundred ninety-three".