556626626655 has 48 divisors (see below), whose sum is σ = 1030449356160. Its totient is φ = 255675372480.

The previous prime is 556626626641. The next prime is 556626626657.

556626626655 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 556626626655 - 2⁷ = 556626626527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556626626657) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8036077 + ... + 8105046.

It is an arithmetic number, because the mean of its divisors is an integer number (21467694920).

Almost surely, 2^556626626655 is an apocalyptic number.

556626626655 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

556626626655 is a deficient number, since it is larger than the sum of its proper divisors (473822729505).

556626626655 is a wasteful number, since it uses less digits than its factorization.

556626626655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16141172 (or 16141161 counting only the distinct ones).

The product of its digits is 116640000, while the sum is 60.

The spelling of 556626626655 in words is "five hundred fifty-six billion, six hundred twenty-six million, six hundred twenty-six thousand, six hundred fifty-five".