10565605491 has 64 divisors (see below), whose sum is σ = 16643128320. Its totient is φ = 5837944320.

The previous prime is 10565605469. The next prime is 10565605493. The reversal of 10565605491 is 19450656501.

10565605491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10565605491 - 2¹⁵ = 10565572723 is a prime.

It is a super-2 number, since 2×10565605491² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10565605493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 36059941 + ... + 36060233.

It is an arithmetic number, because the mean of its divisors is an integer number (260048880).

Almost surely, 2^10565605491 is an apocalyptic number.

10565605491 is a deficient number, since it is larger than the sum of its proper divisors (6077522829).

10565605491 is a wasteful number, since it uses less digits than its factorization.

10565605491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716.

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 10565605491 in words is "ten billion, five hundred sixty-five million, six hundred five thousand, four hundred ninety-one".