500404638781807 has 2 divisors, whose sum is σ = 500404638781808. Its totient is φ = 500404638781806.

The previous prime is 500404638781799. The next prime is 500404638781843. The reversal of 500404638781807 is 708187836404005.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 500404638781807 - 2³ = 500404638781799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (500404638721807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250202319390903 + 250202319390904.

It is an arithmetic number, because the mean of its divisors is an integer number (250202319390904).

Almost surely, 2^{500404638781807} is an apocalyptic number.

500404638781807 is a deficient number, since it is larger than the sum of its proper divisors (1).

500404638781807 is an equidigital number, since it uses as much as digits as its factorization.

500404638781807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36126720, while the sum is 61.

The spelling of 500404638781807 in words is "five hundred trillion, four hundred four billion, six hundred thirty-eight million, seven hundred eighty-one thousand, eight hundred seven".