40040240220 has 96 divisors (see below), whose sum is σ = 124700083200. Its totient is φ = 10666216512.

The previous prime is 40040240213. The next prime is 40040240221. The reversal of 40040240220 is 2204204004.

40040240220 is a `hidden beast` number, since 4 + 0 + 0 + 402 + 40 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 40040240193 and 40040240202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40040240221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 483841 + ... + 560519.

It is an arithmetic number, because the mean of its divisors is an integer number (1298959200).

Almost surely, 2^40040240220 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 40040240220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62350041600).

40040240220 is an abundant number, since it is smaller than the sum of its proper divisors (84659842980).

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

40040240220 is a wasteful number, since it uses less digits than its factorization.

40040240220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77664 (or 77656 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 40040240220 its reverse (2204204004), we get a palindrome (42244444224).

The spelling of 40040240220 in words is "forty billion, forty million, two hundred forty thousand, two hundred twenty".