16143946895 has 16 divisors (see below), whose sum is σ = 20519656128. Its totient is φ = 12151088640.

The previous prime is 16143946891. The next prime is 16143946909. The reversal of 16143946895 is 59864934161.

It is not a de Polignac number, because 16143946895 - 2² = 16143946891 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16143946895.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16143946891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215390 + ... + 280500.

It is an arithmetic number, because the mean of its divisors is an integer number (1282478508).

Almost surely, 2^16143946895 is an apocalyptic number.

16143946895 is a deficient number, since it is larger than the sum of its proper divisors (4375709233).

16143946895 is a wasteful number, since it uses less digits than its factorization.

16143946895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68050.

The product of its digits is 5598720, while the sum is 56.

The spelling of 16143946895 in words is "sixteen billion, one hundred forty-three million, nine hundred forty-six thousand, eight hundred ninety-five".