55403646163 has 32 divisors (see below), whose sum is σ = 62411811840. Its totient is φ = 48924311040.

The previous prime is 55403646139. The next prime is 55403646217. The reversal of 55403646163 is 36164630455.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55403646163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55403640163) 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 in 31 ways as a sum of consecutive naturals, for example, 25924831 + ... + 25926967.

It is an arithmetic number, because the mean of its divisors is an integer number (1950369120).

Almost surely, 2^55403646163 is an apocalyptic number.

55403646163 is a deficient number, since it is larger than the sum of its proper divisors (7008165677).

55403646163 is a wasteful number, since it uses less digits than its factorization.

55403646163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3667.

The product of its (nonzero) digits is 777600, while the sum is 43.

The spelling of 55403646163 in words is "fifty-five billion, four hundred three million, six hundred forty-six thousand, one hundred sixty-three".