105366543621 has 16 divisors (see below), whose sum is σ = 147893529600. Its totient is φ = 66542493168.

The previous prime is 105366543539. The next prime is 105366543649. The reversal of 105366543621 is 126345663501.

It is not a de Polignac number, because 105366543621 - 2¹⁹ = 105366019333 is a prime.

It is a super-2 number, since 2×105366543621² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105366543421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 837670 + ... + 955208.

It is an arithmetic number, because the mean of its divisors is an integer number (9243345600).

Almost surely, 2^105366543621 is an apocalyptic number.

It is an amenable number.

105366543621 is a deficient number, since it is larger than the sum of its proper divisors (42526985979).

105366543621 is a wasteful number, since it uses less digits than its factorization.

105366543621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133288.

The product of its (nonzero) digits is 388800, while the sum is 42.

The spelling of 105366543621 in words is "one hundred five billion, three hundred sixty-six million, five hundred forty-three thousand, six hundred twenty-one".