40344343161 has 16 divisors (see below), whose sum is σ = 55296292800. Its totient is φ = 26145626688.

The previous prime is 40344343157. The next prime is 40344343183. The reversal of 40344343161 is 16134344304.

It is a happy number.

It is not a de Polignac number, because 40344343161 - 2² = 40344343157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40344343261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40771 + ... + 286968.

It is an arithmetic number, because the mean of its divisors is an integer number (3456018300).

Almost surely, 2^40344343161 is an apocalyptic number.

It is an amenable number.

40344343161 is a deficient number, since it is larger than the sum of its proper divisors (14951949639).

40344343161 is a wasteful number, since it uses less digits than its factorization.

40344343161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328888.

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 40344343161 its reverse (16134344304), we get a palindrome (56478687465).

The spelling of 40344343161 in words is "forty billion, three hundred forty-four million, three hundred forty-three thousand, one hundred sixty-one".