55408445819 has 2 divisors, whose sum is σ = 55408445820. Its totient is φ = 55408445818.

The previous prime is 55408445779. The next prime is 55408445857. The reversal of 55408445819 is 91854480455.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55408445819 - 2²⁴ = 55391668603 is a prime.

It is a super-2 number, since 2×55408445819² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55408442819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27704222909 + 27704222910.

It is an arithmetic number, because the mean of its divisors is an integer number (27704222910).

Almost surely, 2^55408445819 is an apocalyptic number.

55408445819 is a deficient number, since it is larger than the sum of its proper divisors (1).

55408445819 is an equidigital number, since it uses as much as digits as its factorization.

55408445819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608000, while the sum is 53.

The spelling of 55408445819 in words is "fifty-five billion, four hundred eight million, four hundred forty-five thousand, eight hundred nineteen".