55641685133 has 2 divisors, whose sum is σ = 55641685134. Its totient is φ = 55641685132.

The previous prime is 55641685091. The next prime is 55641685147. The reversal of 55641685133 is 33158614655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29557174084 + 26084511049 = 171922^2 + 161507^2 .

It is a cyclic number.

It is not a de Polignac number, because 55641685133 - 2¹⁴ = 55641668749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55641685163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27820842566 + 27820842567.

It is an arithmetic number, because the mean of its divisors is an integer number (27820842567).

Almost surely, 2^55641685133 is an apocalyptic number.

It is an amenable number.

55641685133 is a deficient number, since it is larger than the sum of its proper divisors (1).

55641685133 is an equidigital number, since it uses as much as digits as its factorization.

55641685133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296000, while the sum is 47.

The spelling of 55641685133 in words is "fifty-five billion, six hundred forty-one million, six hundred eighty-five thousand, one hundred thirty-three".