2016566256540 has 96 divisors (see below), whose sum is σ = 6220680560640. Its totient is φ = 484024288000.

The previous prime is 2016566256533. The next prime is 2016566256553. The reversal of 2016566256540 is 456526656102.

It is a self number, because there is not a number n which added to its sum of digits gives 2016566256540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15059100 + ... + 15192419.

It is an arithmetic number, because the mean of its divisors is an integer number (64798755840).

Almost surely, 2^{2016566256540} is an apocalyptic number.

2016566256540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2016566256540 is an abundant number, since it is smaller than the sum of its proper divisors (4204114304100).

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

2016566256540 is a wasteful number, since it uses less digits than its factorization.

2016566256540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30251643 (or 30251641 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 48.

It can be divided in two parts, 20165662 and 56540, that added together give a palindrome (20222202).

The spelling of 2016566256540 in words is "two trillion, sixteen billion, five hundred sixty-six million, two hundred fifty-six thousand, five hundred forty".