162143128899 has 24 divisors (see below), whose sum is σ = 240564132432. Its totient is φ = 105161906880.

The previous prime is 162143128879. The next prime is 162143128943. The reversal of 162143128899 is 998821341261.

It is a happy number.

162143128899 is a `hidden beast` number, since 1 + 621 + 4 + 3 + 1 + 2 + 8 + 8 + 9 + 9 = 666.

162143128899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 402670²-1.

It is not a de Polignac number, because 162143128899 - 2⁵ = 162143128867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (162143128879) 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 23 ways as a sum of consecutive naturals, for example, 3601669 + ... + 3646409.

It is an arithmetic number, because the mean of its divisors is an integer number (10023505518).

Almost surely, 2^162143128899 is an apocalyptic number.

162143128899 is a deficient number, since it is larger than the sum of its proper divisors (78421003533).

162143128899 is a wasteful number, since it uses less digits than its factorization.

162143128899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55667 (or 55664 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 54.

The spelling of 162143128899 in words is "one hundred sixty-two billion, one hundred forty-three million, one hundred twenty-eight thousand, eight hundred ninety-nine".