523220023324520 has 64 divisors (see below), whose sum is σ = 1177459168723200. Its totient is φ = 209249947365120.

The previous prime is 523220023324513. The next prime is 523220023324543. The reversal of 523220023324520 is 25423320022325.

It is a super-2 number, since 2×523220023324520² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 8100477425 + ... + 8100542015.

It is an arithmetic number, because the mean of its divisors is an integer number (18397799511300).

Almost surely, 2^{523220023324520} is an apocalyptic number.

It is an amenable number.

523220023324520 is an abundant number, since it is smaller than the sum of its proper divisors (654239145398680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

523220023324520 is a wasteful number, since it uses less digits than its factorization.

523220023324520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98298 (or 98294 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 35.

Adding to 523220023324520 its reverse (25423320022325), we get a palindrome (548643343346845).

The spelling of 523220023324520 in words is "five hundred twenty-three trillion, two hundred twenty billion, twenty-three million, three hundred twenty-four thousand, five hundred twenty".