105616155065 has 4 divisors (see below), whose sum is σ = 126739386084. Its totient is φ = 84492924048.

The previous prime is 105616155061. The next prime is 105616155091. The reversal of 105616155065 is 560551616501.

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 14685561856 + 90930593209 = 121184^2 + 301547^2 .

It is a cyclic number.

It is not a de Polignac number, because 105616155065 - 2² = 105616155061 is a prime.

It is a super-3 number, since 3×105616155065³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105616155061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10561615502 + ... + 10561615511.

It is an arithmetic number, because the mean of its divisors is an integer number (31684846521).

Almost surely, 2^105616155065 is an apocalyptic number.

It is an amenable number.

105616155065 is a deficient number, since it is larger than the sum of its proper divisors (21123231019).

105616155065 is an equidigital number, since it uses as much as digits as its factorization.

105616155065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21123231018.

The product of its (nonzero) digits is 135000, while the sum is 41.

The spelling of 105616155065 in words is "one hundred five billion, six hundred sixteen million, one hundred fifty-five thousand, sixty-five".