55050151666621 has 2 divisors, whose sum is σ = 55050151666622. Its totient is φ = 55050151666620.

The previous prime is 55050151666589. The next prime is 55050151666649. The reversal of 55050151666621 is 12666615105055.

55050151666621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34174710495396 + 20875441171225 = 5845914^2 + 4568965^2 .

It is a cyclic number.

It is not a de Polignac number, because 55050151666621 - 2⁵ = 55050151666589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55050151666681) 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, 27525075833310 + 27525075833311.

It is an arithmetic number, because the mean of its divisors is an integer number (27525075833311).

Almost surely, 2^{55050151666621} is an apocalyptic number.

It is an amenable number.

55050151666621 is a deficient number, since it is larger than the sum of its proper divisors (1).

55050151666621 is an equidigital number, since it uses as much as digits as its factorization.

55050151666621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620000, while the sum is 49.

The spelling of 55050151666621 in words is "fifty-five trillion, fifty billion, one hundred fifty-one million, six hundred sixty-six thousand, six hundred twenty-one".