400213441023044 has 36 divisors (see below), whose sum is σ = 769973545179804. Its totient is φ = 181881765120000.

The previous prime is 400213441023041. The next prime is 400213441023049. The reversal of 400213441023044 is 440320144312004.

It can be written as a sum of positive squares in 2 ways, for example, as 244944097476100 + 155269343546944 = 15650690^2 + 12460712^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 400213441023044.

It is not an unprimeable number, because it can be changed into a prime (400213441023041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73353257 + ... + 78620144.

Almost surely, 2^{400213441023044} is an apocalyptic number.

400213441023044 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

400213441023044 is a deficient number, since it is larger than the sum of its proper divisors (369760104156760).

400213441023044 is a wasteful number, since it uses less digits than its factorization.

400213441023044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151978868 (or 151978855 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 400213441023044 its reverse (440320144312004), we get a palindrome (840533585335048).

The spelling of 400213441023044 in words is "four hundred trillion, two hundred thirteen billion, four hundred forty-one million, twenty-three thousand, forty-four".