523130521440 has 384 divisors, whose sum is σ = 1763013288960. Its totient is φ = 130072707072.

The previous prime is 523130521439. The next prime is 523130521457. The reversal of 523130521440 is 44125031325.

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 = 523130521398 and 523130521407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 365058964 + ... + 365060396.

It is an arithmetic number, because the mean of its divisors is an integer number (4591180440).

Almost surely, 2^523130521440 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 523130521440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (881506644480).

523130521440 is an abundant number, since it is smaller than the sum of its proper divisors (1239882767520).

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

523130521440 is a wasteful number, since it uses less digits than its factorization.

523130521440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2286 (or 2278 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 523130521440 its reverse (44125031325), we get a palindrome (567255552765).

The spelling of 523130521440 in words is "five hundred twenty-three billion, one hundred thirty million, five hundred twenty-one thousand, four hundred forty".