55121360601641 has 2 divisors, whose sum is σ = 55121360601642. Its totient is φ = 55121360601640.

The previous prime is 55121360601631. The next prime is 55121360601701. The reversal of 55121360601641 is 14610606312155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50691851072041 + 4429509529600 = 7119821^2 + 2104640^2 .

It is a cyclic number.

It is not a de Polignac number, because 55121360601641 - 2¹⁴ = 55121360585257 is a prime.

It is a super-2 number, since 2×55121360601641² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55121360601631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27560680300820 + 27560680300821.

It is an arithmetic number, because the mean of its divisors is an integer number (27560680300821).

Almost surely, 2^{55121360601641} is an apocalyptic number.

It is an amenable number.

55121360601641 is a deficient number, since it is larger than the sum of its proper divisors (1).

55121360601641 is an equidigital number, since it uses as much as digits as its factorization.

55121360601641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 41.

Adding to 55121360601641 its reverse (14610606312155), we get a palindrome (69731966913796).

The spelling of 55121360601641 in words is "fifty-five trillion, one hundred twenty-one billion, three hundred sixty million, six hundred one thousand, six hundred forty-one".