40400382220 has 24 divisors (see below), whose sum is σ = 92553603408. Its totient is φ = 14691048000.

The previous prime is 40400382181. The next prime is 40400382221. The reversal of 40400382220 is 2228300404.

It is not an unprimeable number, because it can be changed into a prime (40400382221) 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, 91818831 + ... + 91819270.

It is an arithmetic number, because the mean of its divisors is an integer number (3856400142).

Almost surely, 2^40400382220 is an apocalyptic number.

It is an amenable number.

40400382220 is an abundant number, since it is smaller than the sum of its proper divisors (52153221188).

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

40400382220 is a wasteful number, since it uses less digits than its factorization.

40400382220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183638121 (or 183638119 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 40400382220 its reverse (2228300404), we get a palindrome (42628682624).

The spelling of 40400382220 in words is "forty billion, four hundred million, three hundred eighty-two thousand, two hundred twenty".