105354243994 has 8 divisors (see below), whose sum is σ = 160622044308. Its totient is φ = 51813562560.

The previous prime is 105354243989. The next prime is 105354244013. The reversal of 105354243994 is 499342453501.

It can be written as a sum of positive squares in 2 ways, for example, as 88812940225 + 16541303769 = 298015^2 + 128613^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×105354243994² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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, 431779567 + ... + 431779810.

Almost surely, 2^105354243994 is an apocalyptic number.

105354243994 is a deficient number, since it is larger than the sum of its proper divisors (55267800314).

105354243994 is an equidigital number, since it uses as much as digits as its factorization.

105354243994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863559440.

The product of its (nonzero) digits is 2332800, while the sum is 49.

The spelling of 105354243994 in words is "one hundred five billion, three hundred fifty-four million, two hundred forty-three thousand, nine hundred ninety-four".