105728938849 has 4 divisors (see below), whose sum is σ = 105734049840. Its totient is φ = 105723827860.

The previous prime is 105728938841. The next prime is 105728938897. The reversal of 105728938849 is 948839827501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 105728938849 - 2³ = 105728938841 is a prime.

It is a super-2 number, since 2×105728938849² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105728938841) 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, 2524339 + ... + 2565880.

It is an arithmetic number, because the mean of its divisors is an integer number (26433512460).

Almost surely, 2^105728938849 is an apocalyptic number.

It is an amenable number.

105728938849 is a deficient number, since it is larger than the sum of its proper divisors (5110991).

105728938849 is an equidigital number, since it uses as much as digits as its factorization.

105728938849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5110990.

The product of its (nonzero) digits is 34836480, while the sum is 64.

The spelling of 105728938849 in words is "one hundred five billion, seven hundred twenty-eight million, nine hundred thirty-eight thousand, eight hundred forty-nine".