2178483043939 has 4 divisors (see below), whose sum is σ = 2231616776760. Its totient is φ = 2125349311120.

The previous prime is 2178483043937. The next prime is 2178483043993. The reversal of 2178483043939 is 9393403848712.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2178483043939 - 2¹ = 2178483043937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2178483043937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26566866349 + ... + 26566866430.

It is an arithmetic number, because the mean of its divisors is an integer number (557904194190).

Almost surely, 2^{2178483043939} is an apocalyptic number.

2178483043939 is a deficient number, since it is larger than the sum of its proper divisors (53133732821).

2178483043939 is an equidigital number, since it uses as much as digits as its factorization.

2178483043939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53133732820.

The product of its (nonzero) digits is 31352832, while the sum is 61.

The spelling of 2178483043939 in words is "two trillion, one hundred seventy-eight billion, four hundred eighty-three million, forty-three thousand, nine hundred thirty-nine".