105546530021 has 8 divisors (see below), whose sum is σ = 113286043224. Its totient is φ = 97977116160.

The previous prime is 105546530017. The next prime is 105546530059. The reversal of 105546530021 is 120035645501.

It can be written as a sum of positive squares in 4 ways, for example, as 8411457796 + 97135072225 = 91714^2 + 311665^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 105546530021 - 2² = 105546530017 is a prime.

It is a super-2 number, since 2×105546530021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 105546530021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105546530071) 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, 42523550 + ... + 42526031.

It is an arithmetic number, because the mean of its divisors is an integer number (14160755403).

Almost surely, 2^105546530021 is an apocalyptic number.

It is an amenable number.

105546530021 is a deficient number, since it is larger than the sum of its proper divisors (7739513203).

105546530021 is an equidigital number, since it uses as much as digits as its factorization.

105546530021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85049671.

The product of its (nonzero) digits is 18000, while the sum is 32.

The spelling of 105546530021 in words is "one hundred five billion, five hundred forty-six million, five hundred thirty thousand, twenty-one".