405520434012 has 48 divisors (see below), whose sum is σ = 949147379712. Its totient is φ = 134755125120.

The previous prime is 405520434001. The next prime is 405520434089. The reversal of 405520434012 is 210434025504.

It is a super-2 number, since 2×405520434012² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5016837 + ... + 5097027.

It is an arithmetic number, because the mean of its divisors is an integer number (19773903744).

Almost surely, 2^405520434012 is an apocalyptic number.

It is an amenable number.

405520434012 is an abundant number, since it is smaller than the sum of its proper divisors (543626945700).

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

405520434012 is a wasteful number, since it uses less digits than its factorization.

405520434012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81498 (or 81496 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 405520434012 its reverse (210434025504), we get a palindrome (615954459516).

The spelling of 405520434012 in words is "four hundred five billion, five hundred twenty million, four hundred thirty-four thousand, twelve".