100566500565 has 32 divisors (see below), whose sum is σ = 162059671296. Its totient is φ = 53251430400.

The previous prime is 100566500549. The next prime is 100566500569. The reversal of 100566500565 is 565005665001.

It is not a de Polignac number, because 100566500565 - 2⁴ = 100566500549 is a prime.

It is a super-2 number, since 2×100566500565² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100566500569) by changing a digit.

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, 4557499 + ... + 4579511.

It is an arithmetic number, because the mean of its divisors is an integer number (5064364728).

Almost surely, 2^100566500565 is an apocalyptic number.

100566500565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100566500565 is a deficient number, since it is larger than the sum of its proper divisors (61493170731).

100566500565 is a wasteful number, since it uses less digits than its factorization.

100566500565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24189.

The product of its (nonzero) digits is 135000, while the sum is 39.

The spelling of 100566500565 in words is "one hundred billion, five hundred sixty-six million, five hundred thousand, five hundred sixty-five".