555215120663 has 4 divisors (see below), whose sum is σ = 634531566480. Its totient is φ = 475898674848.

The previous prime is 555215120633. The next prime is 555215120671. The reversal of 555215120663 is 366021512555.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 366021512555 = 5 ⋅73204302511.

It is a cyclic number.

It is not a de Polignac number, because 555215120663 - 2⁸ = 555215120407 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 555215120663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555215120633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39658222898 + ... + 39658222911.

It is an arithmetic number, because the mean of its divisors is an integer number (158632891620).

Almost surely, 2^555215120663 is an apocalyptic number.

555215120663 is a deficient number, since it is larger than the sum of its proper divisors (79316445817).

555215120663 is an equidigital number, since it uses as much as digits as its factorization.

555215120663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79316445816.

The product of its (nonzero) digits is 270000, while the sum is 41.

The spelling of 555215120663 in words is "five hundred fifty-five billion, two hundred fifteen million, one hundred twenty thousand, six hundred sixty-three".