98393173661 has 4 divisors (see below), whose sum is σ = 98393888892. Its totient is φ = 98392458432.

The previous prime is 98393173651. The next prime is 98393173709. The reversal of 98393173661 is 16637139389.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 16637139389 = 13 ⋅1279779953.

It can be written as a sum of positive squares in 2 ways, for example, as 57267361636 + 41125812025 = 239306^2 + 202795^2 .

It is a cyclic number.

It is not a de Polignac number, because 98393173661 - 2¹⁰ = 98393172637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 98393173597 and 98393173606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98393173651) 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, 78806 + ... + 450551.

It is an arithmetic number, because the mean of its divisors is an integer number (24598472223).

Almost surely, 2^98393173661 is an apocalyptic number.

It is an amenable number.

98393173661 is a deficient number, since it is larger than the sum of its proper divisors (715231).

98393173661 is a wasteful number, since it uses less digits than its factorization.

98393173661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715230.

The product of its digits is 4408992, while the sum is 56.

The spelling of 98393173661 in words is "ninety-eight billion, three hundred ninety-three million, one hundred seventy-three thousand, six hundred sixty-one".