213045140440 has 48 divisors (see below), whose sum is σ = 526890576240. Its totient is φ = 77470958400.

The previous prime is 213045140419. The next prime is 213045140449. The reversal of 213045140440 is 44041540312.

It is a junction number, because it is equal to n+sod(n) for n = 213045140399 and 213045140408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213045140449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22003956 + ... + 22013635.

It is an arithmetic number, because the mean of its divisors is an integer number (10976887005).

Almost surely, 2^213045140440 is an apocalyptic number.

213045140440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213045140440 is an abundant number, since it is smaller than the sum of its proper divisors (313845435800).

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

213045140440 is a wasteful number, since it uses less digits than its factorization.

213045140440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44017624 (or 44017609 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 213045140440 its reverse (44041540312), we get a palindrome (257086680752).

The spelling of 213045140440 in words is "two hundred thirteen billion, forty-five million, one hundred forty thousand, four hundred forty".