523304666403 has 64 divisors (see below), whose sum is σ = 745827264000. Its totient is φ = 326005954560.

The previous prime is 523304666351. The next prime is 523304666407. The reversal of 523304666403 is 304666403325.

It is a Cunningham number, because it is equal to 723398²-1.

It is not a de Polignac number, because 523304666403 - 2¹⁰ = 523304665379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (523304666407) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 38333323 + ... + 38346971.

It is an arithmetic number, because the mean of its divisors is an integer number (11653551000).

Almost surely, 2^523304666403 is an apocalyptic number.

523304666403 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

523304666403 is a deficient number, since it is larger than the sum of its proper divisors (222522597597).

523304666403 is a wasteful number, since it uses less digits than its factorization.

523304666403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13892.

The product of its (nonzero) digits is 933120, while the sum is 42.

The spelling of 523304666403 in words is "five hundred twenty-three billion, three hundred four million, six hundred sixty-six thousand, four hundred three".