538239779807 has 2 divisors, whose sum is σ = 538239779808. Its totient is φ = 538239779806.

The previous prime is 538239779681. The next prime is 538239779813. The reversal of 538239779807 is 708977932835.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-538239779807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (538239719807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269119889903 + 269119889904.

It is an arithmetic number, because the mean of its divisors is an integer number (269119889904).

Almost surely, 2^538239779807 is an apocalyptic number.

538239779807 is a deficient number, since it is larger than the sum of its proper divisors (1).

538239779807 is an equidigital number, since it uses as much as digits as its factorization.

538239779807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160030080, while the sum is 68.

The spelling of 538239779807 in words is "five hundred thirty-eight billion, two hundred thirty-nine million, seven hundred seventy-nine thousand, eight hundred seven".