55536420019 has 2 divisors, whose sum is σ = 55536420020. Its totient is φ = 55536420018.

The previous prime is 55536420001. The next prime is 55536420053. The reversal of 55536420019 is 91002463555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55536420019 - 2²¹ = 55534322867 is a prime.

It is a super-2 number, since 2×55536420019² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55536420059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27768210009 + 27768210010.

It is an arithmetic number, because the mean of its divisors is an integer number (27768210010).

Almost surely, 2^55536420019 is an apocalyptic number.

55536420019 is a deficient number, since it is larger than the sum of its proper divisors (1).

55536420019 is an equidigital number, since it uses as much as digits as its factorization.

55536420019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162000, while the sum is 40.

The spelling of 55536420019 in words is "fifty-five billion, five hundred thirty-six million, four hundred twenty thousand, nineteen".