405452233040 has 20 divisors (see below), whose sum is σ = 942676442004. Its totient is φ = 162180893184.

The previous prime is 405452233037. The next prime is 405452233063. The reversal of 405452233040 is 40332254504.

It can be written as a sum of positive squares in 2 ways, for example, as 208717404736 + 196734828304 = 456856^2 + 443548^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 405452232988 and 405452233006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2534076377 + ... + 2534076536.

Almost surely, 2^405452233040 is an apocalyptic number.

405452233040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

405452233040 is an abundant number, since it is smaller than the sum of its proper divisors (537224208964).

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

405452233040 is a wasteful number, since it uses less digits than its factorization.

405452233040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5068152926 (or 5068152920 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 32.

Adding to 405452233040 its reverse (40332254504), we get a palindrome (445784487544).

The spelling of 405452233040 in words is "four hundred five billion, four hundred fifty-two million, two hundred thirty-three thousand, forty".