40523452520 has 96 divisors (see below), whose sum is σ = 95961537000. Its totient is φ = 15399369216.

The previous prime is 40523452511. The next prime is 40523452553. The reversal of 40523452520 is 2525432504.

It can be written as a sum of positive squares in 4 ways, for example, as 19031306116 + 21492146404 = 137954^2 + 146602^2 .

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 23 ways as a sum of consecutive naturals, for example, 3146414 + ... + 3159266.

Almost surely, 2^40523452520 is an apocalyptic number.

40523452520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40523452520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47980768500).

40523452520 is an abundant number, since it is smaller than the sum of its proper divisors (55438084480).

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

40523452520 is a wasteful number, since it uses less digits than its factorization.

40523452520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13059 (or 13032 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 32.

It can be divided in two parts, 405234 and 52520, that added together give a palindrome (457754).

The spelling of 40523452520 in words is "forty billion, five hundred twenty-three million, four hundred fifty-two thousand, five hundred twenty".