5642278266223 has 2 divisors, whose sum is σ = 5642278266224. Its totient is φ = 5642278266222.

The previous prime is 5642278266179. The next prime is 5642278266241. The reversal of 5642278266223 is 3226628722465.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5642278266223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5642278266263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2821139133111 + 2821139133112.

It is an arithmetic number, because the mean of its divisors is an integer number (2821139133112).

Almost surely, 2^{5642278266223} is an apocalyptic number.

5642278266223 is a deficient number, since it is larger than the sum of its proper divisors (1).

5642278266223 is an equidigital number, since it uses as much as digits as its factorization.

5642278266223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23224320, while the sum is 55.

The spelling of 5642278266223 in words is "five trillion, six hundred forty-two billion, two hundred seventy-eight million, two hundred sixty-six thousand, two hundred twenty-three".