105993372893 has 4 divisors (see below), whose sum is σ = 106265849820. Its totient is φ = 105720895968.

The previous prime is 105993372883. The next prime is 105993372907. The reversal of 105993372893 is 398273399501.

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 32724086404 + 73269286489 = 180898^2 + 270683^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105993372893 is a prime.

It is a super-2 number, since 2×105993372893² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105993372883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136237880 + ... + 136238657.

It is an arithmetic number, because the mean of its divisors is an integer number (26566462455).

Almost surely, 2^105993372893 is an apocalyptic number.

It is an amenable number.

105993372893 is a deficient number, since it is larger than the sum of its proper divisors (272476927).

105993372893 is an equidigital number, since it uses as much as digits as its factorization.

105993372893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272476926.

The product of its (nonzero) digits is 11022480, while the sum is 59.

The spelling of 105993372893 in words is "one hundred five billion, nine hundred ninety-three million, three hundred seventy-two thousand, eight hundred ninety-three".