556944449655 has 32 divisors (see below), whose sum is σ = 1029304827648. Its totient is φ = 254149337600.

The previous prime is 556944449653. The next prime is 556944449707.

556944449655 is nontrivially palindromic in base 10.

556944449655 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 556944449655 - 2¹ = 556944449653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556944449653) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99274281 + ... + 99279890.

It is an arithmetic number, because the mean of its divisors is an integer number (32165775864).

Almost surely, 2^556944449655 is an apocalyptic number.

556944449655 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

556944449655 is a deficient number, since it is larger than the sum of its proper divisors (472360377993).

556944449655 is a wasteful number, since it uses less digits than its factorization.

556944449655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198554207.

The product of its digits is 466560000, while the sum is 66.

The spelling of 556944449655 in words is "five hundred fifty-six billion, nine hundred forty-four million, four hundred forty-nine thousand, six hundred fifty-five".