400340130311444 has 24 divisors (see below), whose sum is σ = 702774191974848. Its totient is φ = 199547611369920.

The previous prime is 400340130311441. The next prime is 400340130311461. The reversal of 400340130311444 is 444113031043004.

It is a self number, because there is not a number n which added to its sum of digits gives 400340130311444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400340130311441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1514129 + ... + 28336775.

It is an arithmetic number, because the mean of its divisors is an integer number (29282257998952).

Almost surely, 2^{400340130311444} is an apocalyptic number.

It is an amenable number.

400340130311444 is a deficient number, since it is larger than the sum of its proper divisors (302434061663404).

400340130311444 is a wasteful number, since it uses less digits than its factorization.

400340130311444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26834255 (or 26834253 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 400340130311444 its reverse (444113031043004), we get a palindrome (844453161354448).

The spelling of 400340130311444 in words is "four hundred trillion, three hundred forty billion, one hundred thirty million, three hundred eleven thousand, four hundred forty-four".