105505665015651 has 8 divisors (see below), whose sum is σ = 140676771136704. Its totient is φ = 70335834452520.

The previous prime is 105505665015643. The next prime is 105505665015677. The reversal of 105505665015651 is 156510566505501.

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

It is not a de Polignac number, because 105505665015651 - 2³ = 105505665015643 is a prime.

It is a super-2 number, since 2×105505665015651² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105505665015594 and 105505665015603.

It is not an unprimeable number, because it can be changed into a prime (105505665015451) 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, 318696465 + ... + 319027346.

It is an arithmetic number, because the mean of its divisors is an integer number (17584596392088).

Almost surely, 2^{105505665015651} is an apocalyptic number.

105505665015651 is a deficient number, since it is larger than the sum of its proper divisors (35171106121053).

105505665015651 is an equidigital number, since it uses as much as digits as its factorization.

105505665015651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637778961.

The product of its (nonzero) digits is 3375000, while the sum is 51.

The spelling of 105505665015651 in words is "one hundred five trillion, five hundred five billion, six hundred sixty-five million, fifteen thousand, six hundred fifty-one".