2209287405840 has 160 divisors (see below), whose sum is σ = 7010160237696. Its totient is φ = 575270277120.

The previous prime is 2209287405833. The next prime is 2209287405859. The reversal of 2209287405840 is 485047829022.

It is a super-2 number, since 2×2209287405840² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36512892 + ... + 36573348.

Almost surely, 2^{2209287405840} is an apocalyptic number.

2209287405840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2209287405840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3505080118848).

2209287405840 is an abundant number, since it is smaller than the sum of its proper divisors (4800872831856).

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

2209287405840 is a wasteful number, since it uses less digits than its factorization.

2209287405840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64057 (or 64051 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 51.

The spelling of 2209287405840 in words is "two trillion, two hundred nine billion, two hundred eighty-seven million, four hundred five thousand, eight hundred forty".