55195816880609 has 2 divisors, whose sum is σ = 55195816880610. Its totient is φ = 55195816880608.

The previous prime is 55195816880587. The next prime is 55195816880639. The reversal of 55195816880609 is 90608861859155.

55195816880609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51867939763600 + 3327877117009 = 7201940^2 + 1824247^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55195816880609 is a prime.

It is a super-2 number, since 2×55195816880609² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55195816880639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27597908440304 + 27597908440305.

It is an arithmetic number, because the mean of its divisors is an integer number (27597908440305).

Almost surely, 2^{55195816880609} is an apocalyptic number.

It is an amenable number.

55195816880609 is a deficient number, since it is larger than the sum of its proper divisors (1).

55195816880609 is an equidigital number, since it uses as much as digits as its factorization.

55195816880609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624000, while the sum is 71.

The spelling of 55195816880609 in words is "fifty-five trillion, one hundred ninety-five billion, eight hundred sixteen million, eight hundred eighty thousand, six hundred nine".