10601666565 has 64 divisors (see below), whose sum is σ = 20581724160. Its totient is φ = 4549063680.

The previous prime is 10601666563. The next prime is 10601666567. The reversal of 10601666565 is 56566610601.

It is an interprime number because it is at equal distance from previous prime (10601666563) and next prime (10601666567).

It is not a de Polignac number, because 10601666565 - 2¹ = 10601666563 is a prime.

It is a super-3 number, since 3×10601666565³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10601666563) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 668680 + ... + 684350.

It is an arithmetic number, because the mean of its divisors is an integer number (321589440).

Almost surely, 2^10601666565 is an apocalyptic number.

10601666565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10601666565 is a deficient number, since it is larger than the sum of its proper divisors (9980057595).

10601666565 is a wasteful number, since it uses less digits than its factorization.

10601666565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16082.

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 10601666565 in words is "ten billion, six hundred one million, six hundred sixty-six thousand, five hundred sixty-five".