55558426643 has 2 divisors, whose sum is σ = 55558426644. Its totient is φ = 55558426642.

The previous prime is 55558426633. The next prime is 55558426667. The reversal of 55558426643 is 34662485555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55558426643 - 2⁸ = 55558426387 is a prime.

It is a super-2 number, since 2×55558426643² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55558426613) 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 as a sum of consecutive naturals, namely, 27779213321 + 27779213322.

It is an arithmetic number, because the mean of its divisors is an integer number (27779213322).

Almost surely, 2^55558426643 is an apocalyptic number.

55558426643 is a deficient number, since it is larger than the sum of its proper divisors (1).

55558426643 is an equidigital number, since it uses as much as digits as its factorization.

55558426643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280000, while the sum is 53.

The spelling of 55558426643 in words is "fifty-five billion, five hundred fifty-eight million, four hundred twenty-six thousand, six hundred forty-three".