1556556105066 has 32 divisors (see below), whose sum is σ = 3117766118400. Its totient is φ = 518076839280.

The previous prime is 1556556105061. The next prime is 1556556105073. The reversal of 1556556105066 is 6605016556551.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1556556105061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14041605 + ... + 14152023.

It is an arithmetic number, because the mean of its divisors is an integer number (97430191200).

Almost surely, 2^{1556556105066} is an apocalyptic number.

1556556105066 is an abundant number, since it is smaller than the sum of its proper divisors (1561210013334).

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

1556556105066 is a wasteful number, since it uses less digits than its factorization.

1556556105066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113914.

The product of its (nonzero) digits is 4050000, while the sum is 51.

The spelling of 1556556105066 in words is "one trillion, five hundred fifty-six billion, five hundred fifty-six million, one hundred five thousand, sixty-six".