43013320400 has 120 divisors (see below), whose sum is σ = 105199885824. Its totient is φ = 16896499200.

The previous prime is 43013320379. The next prime is 43013320403. The reversal of 43013320400 is 402331034.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43013320403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23593889 + ... + 23595711.

Almost surely, 2^43013320400 is an apocalyptic number.

43013320400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43013320400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52599942912).

43013320400 is an abundant number, since it is smaller than the sum of its proper divisors (62186565424).

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

43013320400 is a wasteful number, since it uses less digits than its factorization.

43013320400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2869 (or 2858 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 43013320400 its reverse (402331034), we get a palindrome (43415651434).

The spelling of 43013320400 in words is "forty-three billion, thirteen million, three hundred twenty thousand, four hundred".