999478842059 has 2 divisors, whose sum is σ = 999478842060. Its totient is φ = 999478842058.

The previous prime is 999478842013. The next prime is 999478842073. The reversal of 999478842059 is 950248874999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 999478842059 - 2²⁸ = 999210406603 is a prime.

It is not a weakly prime, because it can be changed into another prime (999478842079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499739421029 + 499739421030.

It is an arithmetic number, because the mean of its divisors is an integer number (499739421030).

Almost surely, 2^999478842059 is an apocalyptic number.

999478842059 is a deficient number, since it is larger than the sum of its proper divisors (1).

999478842059 is an equidigital number, since it uses as much as digits as its factorization.

999478842059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 470292480, while the sum is 74.

The spelling of 999478842059 in words is "nine hundred ninety-nine billion, four hundred seventy-eight million, eight hundred forty-two thousand, fifty-nine".