405500521332 has 48 divisors (see below), whose sum is σ = 951534618944. Its totient is φ = 134400384000.

The previous prime is 405500521291. The next prime is 405500521333. The reversal of 405500521332 is 233125005504.

It is a self number, because there is not a number n which added to its sum of digits gives 405500521332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405500521333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29121732 + ... + 29135652.

Almost surely, 2^405500521332 is an apocalyptic number.

It is an amenable number.

405500521332 is an abundant number, since it is smaller than the sum of its proper divisors (546034097612).

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

405500521332 is a wasteful number, since it uses less digits than its factorization.

405500521332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27520 (or 27518 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

Adding to 405500521332 its reverse (233125005504), we get a palindrome (638625526836).

The spelling of 405500521332 in words is "four hundred five billion, five hundred million, five hundred twenty-one thousand, three hundred thirty-two".