43404164881 has 32 divisors (see below), whose sum is σ = 56262205440. Its totient is φ = 32494694400.

The previous prime is 43404164879. The next prime is 43404164887. The reversal of 43404164881 is 18846140434.

It is a happy number.

It is not a de Polignac number, because 43404164881 - 2¹ = 43404164879 is a prime.

It is a super-2 number, since 2×43404164881² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (43404164887) 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 31 ways as a sum of consecutive naturals, for example, 266385 + ... + 397201.

It is an arithmetic number, because the mean of its divisors is an integer number (1758193920).

Almost surely, 2^43404164881 is an apocalyptic number.

It is an amenable number.

43404164881 is a deficient number, since it is larger than the sum of its proper divisors (12858040559).

43404164881 is a wasteful number, since it uses less digits than its factorization.

43404164881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131005.

The product of its (nonzero) digits is 294912, while the sum is 43.

The spelling of 43404164881 in words is "forty-three billion, four hundred four million, one hundred sixty-four thousand, eight hundred eighty-one".