105105200051 has 4 divisors (see below), whose sum is σ = 105109007400. Its totient is φ = 105101392704.

The previous prime is 105105200029. The next prime is 105105200063. The reversal of 105105200051 is 150002501501.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 105105200051 - 2⁶ = 105105199987 is a prime.

It is a super-2 number, since 2×105105200051² (a number of 23 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 = 105105199996 and 105105200032.

It is not an unprimeable number, because it can be changed into a prime (105105200021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1861961 + ... + 1917578.

It is an arithmetic number, because the mean of its divisors is an integer number (26277251850).

Almost surely, 2^105105200051 is an apocalyptic number.

105105200051 is a deficient number, since it is larger than the sum of its proper divisors (3807349).

105105200051 is an equidigital number, since it uses as much as digits as its factorization.

105105200051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3807348.

The product of its (nonzero) digits is 250, while the sum is 20.

Adding to 105105200051 its reverse (150002501501), we get a palindrome (255107701552).

The spelling of 105105200051 in words is "one hundred five billion, one hundred five million, two hundred thousand, fifty-one".