523409697459 has 72 divisors (see below), whose sum is σ = 859216397312. Its totient is φ = 306486180000.

The previous prime is 523409697431. The next prime is 523409697463. The reversal of 523409697459 is 954796904325.

523409697459 is a `hidden beast` number, since 5 + 2 + 3 + 4 + 0 + 96 + 97 + 459 = 666.

It is not a de Polignac number, because 523409697459 - 2⁹ = 523409696947 is a prime.

It is a super-2 number, since 2×523409697459² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 523409697396 and 523409697405.

It is not an unprimeable number, because it can be changed into a prime (523409697469) 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 in 71 ways as a sum of consecutive naturals, for example, 21289644 + ... + 21314214.

Almost surely, 2^523409697459 is an apocalyptic number.

523409697459 is a deficient number, since it is larger than the sum of its proper divisors (335806699853).

523409697459 is a wasteful number, since it uses less digits than its factorization.

523409697459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25261 (or 25247 counting only the distinct ones).

The product of its (nonzero) digits is 73483200, while the sum is 63.

The spelling of 523409697459 in words is "five hundred twenty-three billion, four hundred nine million, six hundred ninety-seven thousand, four hundred fifty-nine".