211456040240 has 80 divisors (see below), whose sum is σ = 513139174848. Its totient is φ = 80884666368.

The previous prime is 211456040239. The next prime is 211456040267. The reversal of 211456040240 is 42040654112.

211456040240 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

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, 8807132 + ... + 8831108.

Almost surely, 2^211456040240 is an apocalyptic number.

211456040240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211456040240 is an abundant number, since it is smaller than the sum of its proper divisors (301683134608).

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

211456040240 is a wasteful number, since it uses less digits than its factorization.

211456040240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28806 (or 28800 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 211456040240 its reverse (42040654112), we get a palindrome (253496694352).

The spelling of 211456040240 in words is "two hundred eleven billion, four hundred fifty-six million, forty thousand, two hundred forty".