555455919649 has 4 divisors (see below), whose sum is σ = 555457446036. Its totient is φ = 555454393264.

The previous prime is 555455919647. The next prime is 555455919677. The reversal of 555455919649 is 946919554555.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 192006094225 + 363449825424 = 438185^2 + 602868^2 .

It is a cyclic number.

It is not a de Polignac number, because 555455919649 - 2¹ = 555455919647 is a prime.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (555455919643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135087 + ... + 1062619.

It is an arithmetic number, because the mean of its divisors is an integer number (138864361509).

Almost surely, 2^555455919649 is an apocalyptic number.

It is an amenable number.

555455919649 is a deficient number, since it is larger than the sum of its proper divisors (1526387).

555455919649 is an equidigital number, since it uses as much as digits as its factorization.

555455919649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526386.

The product of its digits is 218700000, while the sum is 67.

The spelling of 555455919649 in words is "five hundred fifty-five billion, four hundred fifty-five million, nine hundred nineteen thousand, six hundred forty-nine".