211401023645 has 32 divisors (see below), whose sum is σ = 296380320000. Its totient is φ = 144695049408.

The previous prime is 211401023591. The next prime is 211401023693. The reversal of 211401023645 is 546320104112.

211401023645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211401023645 - 2²⁰ = 211399975069 is a prime.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 825431 + ... + 1050779.

It is an arithmetic number, because the mean of its divisors is an integer number (9261885000).

Almost surely, 2^211401023645 is an apocalyptic number.

It is an amenable number.

211401023645 is a deficient number, since it is larger than the sum of its proper divisors (84979296355).

211401023645 is an equidigital number, since it uses as much as digits as its factorization.

211401023645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225922 (or 225908 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 211401023645 its reverse (546320104112), we get a palindrome (757721127757).

The spelling of 211401023645 in words is "two hundred eleven billion, four hundred one million, twenty-three thousand, six hundred forty-five".