409071820272 has 20 divisors (see below), whose sum is σ = 1056768869160. Its totient is φ = 136357273408.

The previous prime is 409071820271. The next prime is 409071820279. The reversal of 409071820272 is 272028170904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409071820271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4261164747 + ... + 4261164842.

It is an arithmetic number, because the mean of its divisors is an integer number (52838443458).

Almost surely, 2^409071820272 is an apocalyptic number.

It is an amenable number.

409071820272 is an abundant number, since it is smaller than the sum of its proper divisors (647697048888).

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

409071820272 is a wasteful number, since it uses less digits than its factorization.

409071820272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8522329600 (or 8522329594 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 42.

The spelling of 409071820272 in words is "four hundred nine billion, seventy-one million, eight hundred twenty thousand, two hundred seventy-two".