55579994143 has 2 divisors, whose sum is σ = 55579994144. Its totient is φ = 55579994142.

The previous prime is 55579994087. The next prime is 55579994153. The reversal of 55579994143 is 34149997555.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55579994143 - 2⁹ = 55579993631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55579994153) 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, 27789997071 + 27789997072.

It is an arithmetic number, because the mean of its divisors is an integer number (27789997072).

Almost surely, 2^55579994143 is an apocalyptic number.

55579994143 is a deficient number, since it is larger than the sum of its proper divisors (1).

55579994143 is an equidigital number, since it uses as much as digits as its factorization.

55579994143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30618000, while the sum is 61.

The spelling of 55579994143 in words is "fifty-five billion, five hundred seventy-nine million, nine hundred ninety-four thousand, one hundred forty-three".