213443300040 has 64 divisors (see below), whose sum is σ = 668170339200. Its totient is φ = 54443507712.

The previous prime is 213443299999. The next prime is 213443300051. The reversal of 213443300040 is 40003344312.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38664505 + ... + 38670024.

It is an arithmetic number, because the mean of its divisors is an integer number (10440161550).

Almost surely, 2^213443300040 is an apocalyptic number.

213443300040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213443300040 is an abundant number, since it is smaller than the sum of its proper divisors (454727039160).

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

213443300040 is a wasteful number, since it uses less digits than its factorization.

213443300040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77334566 (or 77334562 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 213443300040 its reverse (40003344312), we get a palindrome (253446644352).

The spelling of 213443300040 in words is "two hundred thirteen billion, four hundred forty-three million, three hundred thousand, forty".