105105143353505 has 4 divisors (see below), whose sum is σ = 126126172024212. Its totient is φ = 84084114682800.

The previous prime is 105105143353499. The next prime is 105105143353549. The reversal of 105105143353505 is 505353341501501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22936139710561 + 82169003642944 = 4789169^2 + 9064712^2 .

It is a de Polignac number, because none of the positive numbers 2^k-105105143353505 is a prime.

It is a super-2 number, since 2×105105143353505² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10510514335346 + ... + 10510514335355.

It is an arithmetic number, because the mean of its divisors is an integer number (31531543006053).

Almost surely, 2^{105105143353505} is an apocalyptic number.

It is an amenable number.

105105143353505 is a deficient number, since it is larger than the sum of its proper divisors (21021028670707).

105105143353505 is an equidigital number, since it uses as much as digits as its factorization.

105105143353505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21021028670706.

The product of its (nonzero) digits is 337500, while the sum is 41.

The spelling of 105105143353505 in words is "one hundred five trillion, one hundred five billion, one hundred forty-three million, three hundred fifty-three thousand, five hundred five".