98367923509 has 4 divisors (see below), whose sum is σ = 98390077900. Its totient is φ = 98345769120.

The previous prime is 98367923491. The next prime is 98367923551. The reversal of 98367923509 is 90532976389.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32437090609 + 65930832900 = 180103^2 + 256770^2 .

It is a cyclic number.

It is not a de Polignac number, because 98367923509 - 2⁹ = 98367922997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98367923909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11070534 + ... + 11079415.

It is an arithmetic number, because the mean of its divisors is an integer number (24597519475).

Almost surely, 2^98367923509 is an apocalyptic number.

It is an amenable number.

98367923509 is a deficient number, since it is larger than the sum of its proper divisors (22154391).

98367923509 is a wasteful number, since it uses less digits than its factorization.

98367923509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22154390.

The product of its (nonzero) digits is 22044960, while the sum is 61.

The spelling of 98367923509 in words is "ninety-eight billion, three hundred sixty-seven million, nine hundred twenty-three thousand, five hundred nine".