405434401002220 has 48 divisors (see below), whose sum is σ = 869663785925088. Its totient is φ = 158731192788480.

The previous prime is 405434401002209. The next prime is 405434401002223. The reversal of 405434401002220 is 22200104434504.

It is not an unprimeable number, because it can be changed into a prime (405434401002223) 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, 1059712539 + ... + 1060095058.

It is an arithmetic number, because the mean of its divisors is an integer number (18117995540106).

Almost surely, 2^{405434401002220} is an apocalyptic number.

It is an amenable number.

405434401002220 is an abundant number, since it is smaller than the sum of its proper divisors (464229384922868).

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

405434401002220 is a wasteful number, since it uses less digits than its factorization.

405434401002220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2119807810 (or 2119807808 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 405434401002220 its reverse (22200104434504), we get a palindrome (427634505436724).

The spelling of 405434401002220 in words is "four hundred five trillion, four hundred thirty-four billion, four hundred one million, two thousand, two hundred twenty".