40400211020 has 24 divisors (see below), whose sum is σ = 91366631664. Its totient is φ = 14917000896.

The previous prime is 40400210969. The next prime is 40400211029. The reversal of 40400211020 is 2011200404.

It is a junction number, because it is equal to n+sod(n) for n = 40400210986 and 40400211004.

It is not an unprimeable number, because it can be changed into a prime (40400211029) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 77692454 + ... + 77692973.

It is an arithmetic number, because the mean of its divisors is an integer number (3806942986).

Almost surely, 2^40400211020 is an apocalyptic number.

It is an amenable number.

40400211020 is an abundant number, since it is smaller than the sum of its proper divisors (50966420644).

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

40400211020 is a wasteful number, since it uses less digits than its factorization.

40400211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155385449 (or 155385447 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 40400211020 its reverse (2011200404), we get a palindrome (42411411424).

The spelling of 40400211020 in words is "forty billion, four hundred million, two hundred eleven thousand, twenty".