105406545120449 has 4 divisors (see below), whose sum is σ = 107193096732720. Its totient is φ = 103619993508180.

The previous prime is 105406545120439. The next prime is 105406545120451. The reversal of 105406545120449 is 944021545604501.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-105406545120449 is a prime.

It is a super-2 number, since 2×105406545120449² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105406545120397 and 105406545120406.

It is not an unprimeable number, because it can be changed into a prime (105406545120439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 893275806047 + ... + 893275806164.

It is an arithmetic number, because the mean of its divisors is an integer number (26798274183180).

Almost surely, 2^{105406545120449} is an apocalyptic number.

It is an amenable number.

105406545120449 is a deficient number, since it is larger than the sum of its proper divisors (1786551612271).

105406545120449 is an equidigital number, since it uses as much as digits as its factorization.

105406545120449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1786551612270.

The product of its (nonzero) digits is 3456000, while the sum is 50.

The spelling of 105406545120449 in words is "one hundred five trillion, four hundred six billion, five hundred forty-five million, one hundred twenty thousand, four hundred forty-nine".