55558860859 has 2 divisors, whose sum is σ = 55558860860. Its totient is φ = 55558860858.

The previous prime is 55558860853. The next prime is 55558860869. The reversal of 55558860859 is 95806885555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55558860859 - 2¹⁹ = 55558336571 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55558860859.

It is not a weakly prime, because it can be changed into another prime (55558860853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27779430429 + 27779430430.

It is an arithmetic number, because the mean of its divisors is an integer number (27779430430).

Almost surely, 2^55558860859 is an apocalyptic number.

55558860859 is a deficient number, since it is larger than the sum of its proper divisors (1).

55558860859 is an equidigital number, since it uses as much as digits as its factorization.

55558860859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400000, while the sum is 64.

The spelling of 55558860859 in words is "fifty-five billion, five hundred fifty-eight million, eight hundred sixty thousand, eight hundred fifty-nine".