213434022440 has 16 divisors (see below), whose sum is σ = 480226550580. Its totient is φ = 85373608960.

The previous prime is 213434022421. The next prime is 213434022479. The reversal of 213434022440 is 44220434312.

It can be written as a sum of positive squares in 2 ways, for example, as 207041380324 + 6392642116 = 455018^2 + 79954^2 .

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 3 ways as a sum of consecutive naturals, for example, 2667925241 + ... + 2667925320.

Almost surely, 2^213434022440 is an apocalyptic number.

213434022440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213434022440 is an abundant number, since it is smaller than the sum of its proper divisors (266792528140).

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

213434022440 is a wasteful number, since it uses less digits than its factorization.

213434022440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5335850572 (or 5335850568 counting only the distinct ones).

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

Adding to 213434022440 its reverse (44220434312), we get a palindrome (257654456752).

The spelling of 213434022440 in words is "two hundred thirteen billion, four hundred thirty-four million, twenty-two thousand, four hundred forty".