211404244040 has 64 divisors (see below), whose sum is σ = 546211944000. Its totient is φ = 72828253440.

The previous prime is 211404244019. The next prime is 211404244081. The reversal of 211404244040 is 40442404112.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12635435 + ... + 12652154.

It is an arithmetic number, because the mean of its divisors is an integer number (8534561625).

Almost surely, 2^211404244040 is an apocalyptic number.

211404244040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211404244040 is an abundant number, since it is smaller than the sum of its proper divisors (334807699960).

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

211404244040 is a wasteful number, since it uses less digits than its factorization.

211404244040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25287630 (or 25287626 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 211404244040 its reverse (40442404112), we get a palindrome (251846648152).

The spelling of 211404244040 in words is "two hundred eleven billion, four hundred four million, two hundred forty-four thousand, forty".