475803138991 has 2 divisors, whose sum is σ = 475803138992. Its totient is φ = 475803138990.

The previous prime is 475803138961. The next prime is 475803139003. The reversal of 475803138991 is 199831308574.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 475803138991 - 2⁵ = 475803138959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (475803138901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237901569495 + 237901569496.

It is an arithmetic number, because the mean of its divisors is an integer number (237901569496).

Almost surely, 2^475803138991 is an apocalyptic number.

475803138991 is a deficient number, since it is larger than the sum of its proper divisors (1).

475803138991 is an equidigital number, since it uses as much as digits as its factorization.

475803138991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6531840, while the sum is 58.

The spelling of 475803138991 in words is "four hundred seventy-five billion, eight hundred three million, one hundred thirty-eight thousand, nine hundred ninety-one".