405542470144 has 80 divisors (see below), whose sum is σ = 931403297088. Its totient is φ = 172799004672.

The previous prime is 405542470111. The next prime is 405542470147. The reversal of 405542470144 is 441074245504.

It is a junction number, because it is equal to n+sod(n) for n = 405542470097 and 405542470106.

It is not an unprimeable number, because it can be changed into a prime (405542470147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292999 + ... + 947065.

Almost surely, 2^405542470144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 405542470144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (465701648544).

405542470144 is an abundant number, since it is smaller than the sum of its proper divisors (525860826944).

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

405542470144 is an equidigital number, since it uses as much as digits as its factorization.

405542470144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654265 (or 654249 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 40.

The spelling of 405542470144 in words is "four hundred five billion, five hundred forty-two million, four hundred seventy thousand, one hundred forty-four".