105666521704 has 16 divisors (see below), whose sum is σ = 198129687300. Its totient is φ = 52831938432.

The previous prime is 105666521693. The next prime is 105666521713. The reversal of 105666521704 is 407125666501.

It can be written as a sum of positive squares in 2 ways, for example, as 90066012100 + 15600509604 = 300110^2 + 124902^2 .

It is a super-2 number, since 2×105666521704² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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, 229854 + ... + 513970.

Almost surely, 2^105666521704 is an apocalyptic number.

It is an amenable number.

105666521704 is a deficient number, since it is larger than the sum of its proper divisors (92463165596).

105666521704 is a wasteful number, since it uses less digits than its factorization.

105666521704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330612 (or 330608 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 105666521704 in words is "one hundred five billion, six hundred sixty-six million, five hundred twenty-one thousand, seven hundred four".