105216050551 has 4 divisors (see below), whose sum is σ = 105224173912. Its totient is φ = 105207927192.

The previous prime is 105216050543. The next prime is 105216050573. The reversal of 105216050551 is 155050612501.

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 105216050551 - 2³ = 105216050543 is a prime.

It is a super-2 number, since 2×105216050551² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105216050501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4042221 + ... + 4068166.

It is an arithmetic number, because the mean of its divisors is an integer number (26306043478).

Almost surely, 2^105216050551 is an apocalyptic number.

105216050551 is a deficient number, since it is larger than the sum of its proper divisors (8123361).

105216050551 is an equidigital number, since it uses as much as digits as its factorization.

105216050551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8123360.

The product of its (nonzero) digits is 7500, while the sum is 31.

The spelling of 105216050551 in words is "one hundred five billion, two hundred sixteen million, fifty thousand, five hundred fifty-one".