523245403032520 has 64 divisors (see below), whose sum is σ = 1346431059146880. Its totient is φ = 179272706574336.

The previous prime is 523245403032509. The next prime is 523245403032551. The reversal of 523245403032520 is 25230304542325.

It is a super-3 number, since 3×523245403032520³ (a number of 45 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 654377449 + ... + 655176568.

It is an arithmetic number, because the mean of its divisors is an integer number (21037985299170).

Almost surely, 2^{523245403032520} is an apocalyptic number.

It is an amenable number.

523245403032520 is an abundant number, since it is smaller than the sum of its proper divisors (823185656114360).

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

523245403032520 is a wasteful number, since it uses less digits than its factorization.

523245403032520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309555462 (or 1309555458 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 40.

Adding to 523245403032520 its reverse (25230304542325), we get a palindrome (548475707574845).

The spelling of 523245403032520 in words is "five hundred twenty-three trillion, two hundred forty-five billion, four hundred three million, thirty-two thousand, five hundred twenty".