55565568425887 has 32 divisors (see below), whose sum is σ = 61370383463424. Its totient is φ = 49988683920000.

The previous prime is 55565568425863. The next prime is 55565568425891. The reversal of 55565568425887 is 78852486556555.

It is a cyclic number.

It is not a de Polignac number, because 55565568425887 - 2¹¹ = 55565568423839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55565568425387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 719377833 + ... + 719455069.

It is an arithmetic number, because the mean of its divisors is an integer number (1917824483232).

Almost surely, 2^{55565568425887} is an apocalyptic number.

55565568425887 is a deficient number, since it is larger than the sum of its proper divisors (5804815037537).

55565568425887 is a wasteful number, since it uses less digits than its factorization.

55565568425887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82239.

The product of its digits is 16128000000, while the sum is 79.

The spelling of 55565568425887 in words is "fifty-five trillion, five hundred sixty-five billion, five hundred sixty-eight million, four hundred twenty-five thousand, eight hundred eighty-seven".