40400443143 has 20 divisors (see below), whose sum is σ = 60362006760. Its totient is φ = 26928841392.

The previous prime is 40400443117. The next prime is 40400443157. The reversal of 40400443143 is 34134400404.

40400443143 is a `hidden beast` number, since 40 + 40 + 0 + 443 + 143 = 666.

It is not a de Polignac number, because 40400443143 - 2²¹ = 40398345991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40400443843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 447688 + ... + 530306.

It is an arithmetic number, because the mean of its divisors is an integer number (3018100338).

Almost surely, 2^40400443143 is an apocalyptic number.

40400443143 is a deficient number, since it is larger than the sum of its proper divisors (19961563617).

40400443143 is an equidigital number, since it uses as much as digits as its factorization.

40400443143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88668 (or 88659 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 40400443143 its reverse (34134400404), we get a palindrome (74534843547).

The spelling of 40400443143 in words is "forty billion, four hundred million, four hundred forty-three thousand, one hundred forty-three".