523142405520 has 160 divisors (see below), whose sum is σ = 1870741122048. Its totient is φ = 118457839104.

The previous prime is 523142405519. The next prime is 523142405557. The reversal of 523142405520 is 25504241325.

It is a happy number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1275354 + ... + 1634873.

Almost surely, 2^523142405520 is an apocalyptic number.

It is an amenable number.

523142405520 is an abundant number, since it is smaller than the sum of its proper divisors (1347598716528).

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

523142405520 is a wasteful number, since it uses less digits than its factorization.

523142405520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2910357 (or 2910351 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 33.

Adding to 523142405520 its reverse (25504241325), we get a palindrome (548646646845).

The spelling of 523142405520 in words is "five hundred twenty-three billion, one hundred forty-two million, four hundred five thousand, five hundred twenty".