523216535206403 has 4 divisors (see below), whose sum is σ = 523217376311760. Its totient is φ = 523215694101048.

The previous prime is 523216535206367. The next prime is 523216535206427. The reversal of 523216535206403 is 304602535612325.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 523216535206403 - 2³⁸ = 522941657299459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523216535206303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 419618900 + ... + 420863937.

It is an arithmetic number, because the mean of its divisors is an integer number (130804344077940).

Almost surely, 2^{523216535206403} is an apocalyptic number.

523216535206403 is a deficient number, since it is larger than the sum of its proper divisors (841105357).

523216535206403 is an equidigital number, since it uses as much as digits as its factorization.

523216535206403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841105356.

The product of its (nonzero) digits is 3888000, while the sum is 47.

The spelling of 523216535206403 in words is "five hundred twenty-three trillion, two hundred sixteen billion, five hundred thirty-five million, two hundred six thousand, four hundred three".