523143521040 has 320 divisors, whose sum is σ = 2000700518400. Its totient is φ = 110432458752.

The previous prime is 523143520973. The next prime is 523143521053. The reversal of 523143521040 is 40125341325.

It is a super-2 number, since 2×523143521040² (a number of 24 digits) contains 22 as substring.

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 = 523143520989 and 523143521007.

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, 887131 + ... + 1353989.

It is an arithmetic number, because the mean of its divisors is an integer number (6252189120).

Almost surely, 2^523143521040 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 523143521040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1000350259200).

523143521040 is an abundant number, since it is smaller than the sum of its proper divisors (1477556997360).

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

523143521040 is a wasteful number, since it uses less digits than its factorization.

523143521040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466934 (or 466928 counting only the distinct ones).

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

Adding to 523143521040 its reverse (40125341325), we get a palindrome (563268862365).

The spelling of 523143521040 in words is "five hundred twenty-three billion, one hundred forty-three million, five hundred twenty-one thousand, forty".