43213440440 has 32 divisors (see below), whose sum is σ = 97591716000. Its totient is φ = 17221113984.

The previous prime is 43213440427. The next prime is 43213440461. The reversal of 43213440440 is 4404431234.

It is a happy number.

43213440440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×43213440440² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1997300 + ... + 2018819.

It is an arithmetic number, because the mean of its divisors is an integer number (3049741125).

Almost surely, 2^43213440440 is an apocalyptic number.

43213440440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43213440440 is an abundant number, since it is smaller than the sum of its proper divisors (54378275560).

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

43213440440 is a wasteful number, since it uses less digits than its factorization.

43213440440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4016399 (or 4016395 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 43213440440 its reverse (4404431234), we get a palindrome (47617871674).

The spelling of 43213440440 in words is "forty-three billion, two hundred thirteen million, four hundred forty thousand, four hundred forty".