105566661205652 has 12 divisors (see below), whose sum is σ = 189247551186036. Its totient is φ = 51495932295360.

The previous prime is 105566661205597. The next prime is 105566661205751. The reversal of 105566661205652 is 256502166665501.

It can be written as a sum of positive squares in 2 ways, for example, as 33140331751696 + 72426329453956 = 5756764^2 + 8510366^2 .

It is a super-2 number, since 2×105566661205652² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321849576683 + ... + 321849577010.

It is an arithmetic number, because the mean of its divisors is an integer number (15770629265503).

Almost surely, 2^{105566661205652} is an apocalyptic number.

It is an amenable number.

105566661205652 is a deficient number, since it is larger than the sum of its proper divisors (83680889980384).

105566661205652 is a wasteful number, since it uses less digits than its factorization.

105566661205652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643699153738 (or 643699153736 counting only the distinct ones).

The product of its (nonzero) digits is 19440000, while the sum is 56.

The spelling of 105566661205652 in words is "one hundred five trillion, five hundred sixty-six billion, six hundred sixty-one million, two hundred five thousand, six hundred fifty-two".