2656366540 has 12 divisors (see below), whose sum is σ = 5578369776. Its totient is φ = 1062546608.

The previous prime is 2656366529. The next prime is 2656366541. The reversal of 2656366540 is 456636562.

It is not an unprimeable number, because it can be changed into a prime (2656366541) 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 3 ways as a sum of consecutive naturals, for example, 66409144 + ... + 66409183.

It is an arithmetic number, because the mean of its divisors is an integer number (464864148).

Almost surely, 2^2656366540 is an apocalyptic number.

2656366540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2656366540 is an abundant number, since it is smaller than the sum of its proper divisors (2922003236).

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

2656366540 is a wasteful number, since it uses less digits than its factorization.

2656366540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132818336 (or 132818334 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 43.

The square root of 2656366540 is about 51539.9509118897. The cubic root of 2656366540 is about 1384.9348177520.

The spelling of 2656366540 in words is "two billion, six hundred fifty-six million, three hundred sixty-six thousand, five hundred forty".