555420663144 has 80 divisors (see below), whose sum is σ = 1591871101920. Its totient is φ = 180834625440.

The previous prime is 555420663067. The next prime is 555420663209. The reversal of 555420663144 is 441366024555.

555420663144 is a `hidden beast` number, since 5 + 5 + 5 + 4 + 2 + 0 + 6 + 631 + 4 + 4 = 666.

It is a super-2 number, since 2×555420663144² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 555420663144.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9938772 + ... + 9994499.

It is an arithmetic number, because the mean of its divisors is an integer number (19898388774).

Almost surely, 2^555420663144 is an apocalyptic number.

555420663144 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

555420663144 is an abundant number, since it is smaller than the sum of its proper divisors (1036450438776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

555420663144 is a wasteful number, since it uses less digits than its factorization.

555420663144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19933332 (or 19933319 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 45.

Adding to 555420663144 its reverse (441366024555), we get a palindrome (996786687699).

The spelling of 555420663144 in words is "five hundred fifty-five billion, four hundred twenty million, six hundred sixty-three thousand, one hundred forty-four".