105543808581 has 8 divisors (see below), whose sum is σ = 142652819200. Its totient is φ = 69398668512.

The previous prime is 105543808571. The next prime is 105543808609. The reversal of 105543808581 is 185808345501.

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

It is not a de Polignac number, because 105543808581 - 2²² = 105539614277 is a prime.

It is a super-2 number, since 2×105543808581² (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 105543808581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105543808541) 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, 240967381 + ... + 240967818.

It is an arithmetic number, because the mean of its divisors is an integer number (17831602400).

Almost surely, 2^105543808581 is an apocalyptic number.

It is an amenable number.

105543808581 is a deficient number, since it is larger than the sum of its proper divisors (37109010619).

105543808581 is an equidigital number, since it uses as much as digits as its factorization.

105543808581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481935275.

The product of its (nonzero) digits is 768000, while the sum is 48.

The spelling of 105543808581 in words is "one hundred five billion, five hundred forty-three million, eight hundred eight thousand, five hundred eighty-one".