1556228044799 has 16 divisors (see below), whose sum is σ = 1600043778816. Its totient is φ = 1512505612800.

The previous prime is 1556228044753. The next prime is 1556228044831. The reversal of 1556228044799 is 9974408226551.

It is a cyclic number.

It is not a de Polignac number, because 1556228044799 - 2²⁸ = 1555959609343 is a prime.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1556228040799) 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, 243271469 + ... + 243277865.

It is an arithmetic number, because the mean of its divisors is an integer number (100002736176).

Almost surely, 2^{1556228044799} is an apocalyptic number.

1556228044799 is a deficient number, since it is larger than the sum of its proper divisors (43815734017).

1556228044799 is a wasteful number, since it uses less digits than its factorization.

1556228044799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12626.

The product of its (nonzero) digits is 43545600, while the sum is 62.

The spelling of 1556228044799 in words is "one trillion, five hundred fifty-six billion, two hundred twenty-eight million, forty-four thousand, seven hundred ninety-nine".