523110521640 has 256 divisors, whose sum is σ = 1802417080320. Its totient is φ = 118976578560.

The previous prime is 523110521639. The next prime is 523110521663. The reversal of 523110521640 is 46125011325.

523110521640 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 523110521598 and 523110521607.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 183998059 + ... + 184000901.

It is an arithmetic number, because the mean of its divisors is an integer number (7040691720).

Almost surely, 2^523110521640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 523110521640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (901208540160).

523110521640 is an abundant number, since it is smaller than the sum of its proper divisors (1279306558680).

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

523110521640 is a wasteful number, since it uses less digits than its factorization.

523110521640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3872 (or 3868 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 523110521640 its reverse (46125011325), we get a palindrome (569235532965).

The spelling of 523110521640 in words is "five hundred twenty-three billion, one hundred ten million, five hundred twenty-one thousand, six hundred forty".