211445152520 has 64 divisors (see below), whose sum is σ = 548527835520. Its totient is φ = 71853917184.

The previous prime is 211445152507. The next prime is 211445152531. The reversal of 211445152520 is 25251544112.

211445152520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3309782 + ... + 3373061.

It is an arithmetic number, because the mean of its divisors is an integer number (8570747430).

Almost surely, 2^211445152520 is an apocalyptic number.

211445152520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211445152520 is an abundant number, since it is smaller than the sum of its proper divisors (337082683000).

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

211445152520 is a wasteful number, since it uses less digits than its factorization.

211445152520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6682974 (or 6682970 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 32.

Adding to 211445152520 its reverse (25251544112), we get a palindrome (236696696632).

The spelling of 211445152520 in words is "two hundred eleven billion, four hundred forty-five million, one hundred fifty-two thousand, five hundred twenty".