400041040213 has 4 divisors (see below), whose sum is σ = 400074187468. Its totient is φ = 400007892960.

The previous prime is 400041040199. The next prime is 400041040219. The reversal of 400041040213 is 312040140004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 104793343524 + 295247696689 = 323718^2 + 543367^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400041040213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400041040219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16555518 + ... + 16579663.

It is an arithmetic number, because the mean of its divisors is an integer number (100018546867).

Almost surely, 2^400041040213 is an apocalyptic number.

It is an amenable number.

400041040213 is a deficient number, since it is larger than the sum of its proper divisors (33147255).

400041040213 is a wasteful number, since it uses less digits than its factorization.

400041040213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33147254.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 400041040213 its reverse (312040140004), we get a palindrome (712081180217).

The spelling of 400041040213 in words is "four hundred billion, forty-one million, forty thousand, two hundred thirteen".