400163519123 has 2 divisors, whose sum is σ = 400163519124. Its totient is φ = 400163519122.

The previous prime is 400163519117. The next prime is 400163519167. The reversal of 400163519123 is 321915361004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400163519123 - 2¹⁸ = 400163256979 is a prime.

It is not a weakly prime, because it can be changed into another prime (400163519323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200081759561 + 200081759562.

It is an arithmetic number, because the mean of its divisors is an integer number (200081759562).

Almost surely, 2^400163519123 is an apocalyptic number.

400163519123 is a deficient number, since it is larger than the sum of its proper divisors (1).

400163519123 is an equidigital number, since it uses as much as digits as its factorization.

400163519123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 35.

The spelling of 400163519123 in words is "four hundred billion, one hundred sixty-three million, five hundred nineteen thousand, one hundred twenty-three".