538239779863 has 2 divisors, whose sum is σ = 538239779864. Its totient is φ = 538239779862.

The previous prime is 538239779851. The next prime is 538239779899. The reversal of 538239779863 is 368977932835.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 538239779863 - 2²¹ = 538237682711 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 538239779792 and 538239779801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (538239779813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269119889931 + 269119889932.

It is an arithmetic number, because the mean of its divisors is an integer number (269119889932).

Almost surely, 2^538239779863 is an apocalyptic number.

538239779863 is a deficient number, since it is larger than the sum of its proper divisors (1).

538239779863 is an equidigital number, since it uses as much as digits as its factorization.

538239779863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 411505920, while the sum is 70.

The spelling of 538239779863 in words is "five hundred thirty-eight billion, two hundred thirty-nine million, seven hundred seventy-nine thousand, eight hundred sixty-three".