556245542655 has 128 divisors (see below), whose sum is σ = 1134962841600. Its totient is φ = 256004582400.

The previous prime is 556245542651. The next prime is 556245542683.

It is a happy number.

556245542655 is a `hidden beast` number, since 5 + 5 + 6 + 2 + 45 + 542 + 6 + 55 = 666.

556245542655 is nontrivially palindromic in base 10.

556245542655 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 556245542655 - 2² = 556245542651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556245542651) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2129286 + ... + 2376204.

It is an arithmetic number, because the mean of its divisors is an integer number (8866897200).

Almost surely, 2^556245542655 is an apocalyptic number.

556245542655 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

556245542655 is an abundant number, since it is smaller than the sum of its proper divisors (578717298945).

556245542655 is a wasteful number, since it uses less digits than its factorization.

556245542655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247022 (or 247016 counting only the distinct ones).

The product of its digits is 36000000, while the sum is 54.

The spelling of 556245542655 in words is "five hundred fifty-six billion, two hundred forty-five million, five hundred forty-two thousand, six hundred fifty-five".