66105103465 has 4 divisors (see below), whose sum is σ = 79326124164. Its totient is φ = 52884082768.

The previous prime is 66105103433. The next prime is 66105103501. The reversal of 66105103465 is 56430150166.

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 49991593744 + 16113509721 = 223588^2 + 126939^2 .

It is a cyclic number.

It is not a de Polignac number, because 66105103465 - 2⁵ = 66105103433 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 6610510342 + ... + 6610510351.

It is an arithmetic number, because the mean of its divisors is an integer number (19831531041).

Almost surely, 2^66105103465 is an apocalyptic number.

It is an amenable number.

66105103465 is a deficient number, since it is larger than the sum of its proper divisors (13221020699).

66105103465 is a wasteful number, since it uses less digits than its factorization.

66105103465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13221020698.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 66105103465 in words is "sixty-six billion, one hundred five million, one hundred three thousand, four hundred sixty-five".