2143608278399 has 16 divisors (see below), whose sum is σ = 2453967200256. Its totient is φ = 1834283880000.

The previous prime is 2143608278377. The next prime is 2143608278401. The reversal of 2143608278399 is 9938728063412.

It is a cyclic number.

It is not a de Polignac number, because 2143608278399 - 2¹² = 2143608274303 is a prime.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143608178399) 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, 11612474 + ... + 11795624.

It is an arithmetic number, because the mean of its divisors is an integer number (153372950016).

Almost surely, 2^{2143608278399} is an apocalyptic number.

2143608278399 is a deficient number, since it is larger than the sum of its proper divisors (310358921857).

2143608278399 is a wasteful number, since it uses less digits than its factorization.

2143608278399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185966.

The product of its (nonzero) digits is 31352832, while the sum is 62.

The spelling of 2143608278399 in words is "two trillion, one hundred forty-three billion, six hundred eight million, two hundred seventy-eight thousand, three hundred ninety-nine".