5643140278 has 4 divisors (see below), whose sum is σ = 8464710420. Its totient is φ = 2821570138.

The previous prime is 5643140257. The next prime is 5643140287. The reversal of 5643140278 is 8720413465.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 5643140278.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1410785068 + ... + 1410785071.

It is an arithmetic number, because the mean of its divisors is an integer number (2116177605).

Almost surely, 2^5643140278 is an apocalyptic number.

5643140278 is a deficient number, since it is larger than the sum of its proper divisors (2821570142).

5643140278 is a wasteful number, since it uses less digits than its factorization.

5643140278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2821570141.

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 5643140278 is about 75120.8378414405. The cubic root of 5643140278 is about 1780.3563943614.

The spelling of 5643140278 in words is "five billion, six hundred forty-three million, one hundred forty thousand, two hundred seventy-eight".