55641685163 has 2 divisors, whose sum is σ = 55641685164. Its totient is φ = 55641685162.

The previous prime is 55641685147. The next prime is 55641685189. The reversal of 55641685163 is 36158614655.

55641685163 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 is a cyclic number.

It is not a de Polignac number, because 55641685163 - 2⁴ = 55641685147 is a prime.

It is not a weakly prime, because it can be changed into another prime (55641685133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27820842581 + 27820842582.

It is an arithmetic number, because the mean of its divisors is an integer number (27820842582).

Almost surely, 2^55641685163 is an apocalyptic number.

55641685163 is a deficient number, since it is larger than the sum of its proper divisors (1).

55641685163 is an equidigital number, since it uses as much as digits as its factorization.

55641685163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592000, while the sum is 50.

The spelling of 55641685163 in words is "fifty-five billion, six hundred forty-one million, six hundred eighty-five thousand, one hundred sixty-three".