43311313664 has 72 divisors (see below), whose sum is σ = 90447392448. Its totient is φ = 20677713920.

The previous prime is 43311313651. The next prime is 43311313667. The reversal of 43311313664 is 46631311334.

It is not an unprimeable number, because it can be changed into a prime (43311313667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 449414 + ... + 537210.

It is an arithmetic number, because the mean of its divisors is an integer number (1256213784).

Almost surely, 2^43311313664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43311313664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45223696224).

43311313664 is an abundant number, since it is smaller than the sum of its proper divisors (47136078784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43311313664 is an equidigital number, since it uses as much as digits as its factorization.

43311313664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87901 (or 87887 counting only the distinct ones).

The product of its digits is 46656, while the sum is 35.

Adding to 43311313664 its reverse (46631311334), we get a palindrome (89942624998).

The spelling of 43311313664 in words is "forty-three billion, three hundred eleven million, three hundred thirteen thousand, six hundred sixty-four".