105006621720549 has 8 divisors (see below), whose sum is σ = 140782358403232. Its totient is φ = 69617649759120.

The previous prime is 105006621720547. The next prime is 105006621720571. The reversal of 105006621720549 is 945027126600501.

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

It is not a de Polignac number, because 105006621720549 - 2¹ = 105006621720547 is a prime.

It is a super-2 number, since 2×105006621720549² (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 = 105006621720498 and 105006621720507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105006621720547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96691179679 + ... + 96691180764.

It is an arithmetic number, because the mean of its divisors is an integer number (17597794800404).

Almost surely, 2^{105006621720549} is an apocalyptic number.

It is an amenable number.

105006621720549 is a deficient number, since it is larger than the sum of its proper divisors (35775736682683).

105006621720549 is a wasteful number, since it uses less digits than its factorization.

105006621720549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193382360627.

The product of its (nonzero) digits is 907200, while the sum is 48.

The spelling of 105006621720549 in words is "one hundred five trillion, six billion, six hundred twenty-one million, seven hundred twenty thousand, five hundred forty-nine".