400043140402010 has 96 divisors (see below), whose sum is σ = 863035189739280. Its totient is φ = 133057747350528.

The previous prime is 400043140402007. The next prime is 400043140402027. The reversal of 400043140402010 is 10204041340004.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 236364457474201 + 163678682927809 = 15374149^2 + 12793697^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 84228269 + ... + 88850928.

Almost surely, 2^{400043140402010} is an apocalyptic number.

400043140402010 is an abundant number, since it is smaller than the sum of its proper divisors (462992049337270).

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

400043140402010 is a wasteful number, since it uses less digits than its factorization.

400043140402010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173079360 (or 173079353 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 400043140402010 its reverse (10204041340004), we get a palindrome (410247181742014).

The spelling of 400043140402010 in words is "four hundred trillion, forty-three billion, one hundred forty million, four hundred two thousand, ten".