10656601605 has 24 divisors (see below), whose sum is σ = 19892324088. Its totient is φ = 5246326656.

The previous prime is 10656601591. The next prime is 10656601663. The reversal of 10656601605 is 50610665601.

It can be written as a sum of positive squares in 4 ways, for example, as 2019873249 + 8636728356 = 44943^2 + 92934^2 .

It is not a de Polignac number, because 10656601605 - 2¹⁵ = 10656568837 is a prime.

It is a super-2 number, since 2×10656601605² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10656601605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9107622 + ... + 9108791.

It is an arithmetic number, because the mean of its divisors is an integer number (828846837).

Almost surely, 2^10656601605 is an apocalyptic number.

10656601605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10656601605 is a deficient number, since it is larger than the sum of its proper divisors (9235722483).

10656601605 is a wasteful number, since it uses less digits than its factorization.

10656601605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18216437 (or 18216434 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 10656601605 in words is "ten billion, six hundred fifty-six million, six hundred one thousand, six hundred five".