10656440540 has 12 divisors (see below), whose sum is σ = 22378525176. Its totient is φ = 4262576208.

The previous prime is 10656440537. The next prime is 10656440549. The reversal of 10656440540 is 4504465601.

10656440540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×10656440540² (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 10656440540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10656440549) 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 3 ways as a sum of consecutive naturals, for example, 266410994 + ... + 266411033.

It is an arithmetic number, because the mean of its divisors is an integer number (1864877098).

Almost surely, 2^10656440540 is an apocalyptic number.

10656440540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10656440540 is an abundant number, since it is smaller than the sum of its proper divisors (11722084636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10656440540 is a wasteful number, since it uses less digits than its factorization.

10656440540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532822036 (or 532822034 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 10656440540 in words is "ten billion, six hundred fifty-six million, four hundred forty thousand, five hundred forty".