523011403044 has 144 divisors (see below), whose sum is σ = 1459091887344. Its totient is φ = 156935577600.

The previous prime is 523011403001. The next prime is 523011403087. The reversal of 523011403044 is 440304110325.

It is a happy number.

523011403044 is a `hidden beast` number, since 52 + 301 + 1 + 4 + 0 + 304 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (523011403001) and next prime (523011403087).

It can be written as a sum of positive squares in 8 ways, for example, as 24292963044 + 498718440000 = 155862^2 + 706200^2 .

It is a junction number, because it is equal to n+sod(n) for n = 523011402999 and 523011403017.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64717084 + ... + 64725164.

It is an arithmetic number, because the mean of its divisors is an integer number (10132582551).

Almost surely, 2^523011403044 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 523011403044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (729545943672).

523011403044 is an abundant number, since it is smaller than the sum of its proper divisors (936080484300).

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

523011403044 is a wasteful number, since it uses less digits than its factorization.

523011403044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11518 (or 11513 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 523011403044 its reverse (440304110325), we get a palindrome (963315513369).

The spelling of 523011403044 in words is "five hundred twenty-three billion, eleven million, four hundred three thousand, forty-four".