556143446405 has 4 divisors (see below), whose sum is σ = 667372135692. Its totient is φ = 444914757120.

The previous prime is 556143446401. The next prime is 556143446447. The reversal of 556143446405 is 504644341655.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 351158167396 + 204985279009 = 592586^2 + 452753^2 .

It is not a de Polignac number, because 556143446405 - 2² = 556143446401 is a prime.

It is a super-2 number, since 2×556143446405² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 556143446405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556143446401) 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, 55614344636 + ... + 55614344645.

It is an arithmetic number, because the mean of its divisors is an integer number (166843033923).

Almost surely, 2^556143446405 is an apocalyptic number.

It is an amenable number.

556143446405 is a deficient number, since it is larger than the sum of its proper divisors (111228689287).

556143446405 is a wasteful number, since it uses less digits than its factorization.

556143446405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111228689286.

The product of its (nonzero) digits is 3456000, while the sum is 47.

The spelling of 556143446405 in words is "five hundred fifty-six billion, one hundred forty-three million, four hundred forty-six thousand, four hundred five".