55143634155 has 16 divisors (see below), whose sum is σ = 89221163040. Its totient is φ = 29079488768.

The previous prime is 55143634151. The next prime is 55143634163.

It is a happy number.

55143634155 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 55143634155 - 2² = 55143634151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55143634151) 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 in 15 ways as a sum of consecutive naturals, for example, 20651712 + ... + 20654381.

It is an arithmetic number, because the mean of its divisors is an integer number (5576322690).

Almost surely, 2^55143634155 is an apocalyptic number.

55143634155 is a deficient number, since it is larger than the sum of its proper divisors (34077528885).

55143634155 is a wasteful number, since it uses less digits than its factorization.

55143634155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41306190.

The product of its digits is 540000, while the sum is 42.

The spelling of 55143634155 in words is "fifty-five billion, one hundred forty-three million, six hundred thirty-four thousand, one hundred fifty-five".