106566615565 has 32 divisors (see below), whose sum is σ = 137353708800. Its totient is φ = 79090252800.

The previous prime is 106566615521. The next prime is 106566615577. The reversal of 106566615565 is 565516665601.

It is not a de Polignac number, because 106566615565 - 2¹⁵ = 106566582797 is a prime.

It is a super-2 number, since 2×106566615565² (a number of 23 digits) contains 22 as substring.

It is a congruent 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 31 ways as a sum of consecutive naturals, for example, 1627000 + ... + 1691230.

It is an arithmetic number, because the mean of its divisors is an integer number (4292303400).

Almost surely, 2^106566615565 is an apocalyptic number.

It is an amenable number.

106566615565 is a deficient number, since it is larger than the sum of its proper divisors (30787093235).

106566615565 is a wasteful number, since it uses less digits than its factorization.

106566615565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64533.

The product of its (nonzero) digits is 4860000, while the sum is 52.

The spelling of 106566615565 in words is "one hundred six billion, five hundred sixty-six million, six hundred fifteen thousand, five hundred sixty-five".