211643362044 has 144 divisors (see below), whose sum is σ = 570867792768. Its totient is φ = 65882179584.

The previous prime is 211643362013. The next prime is 211643362141. The reversal of 211643362044 is 440263346112.

211643362044 is a `hidden beast` number, since 2 + 1 + 1 + 643 + 3 + 6 + 2 + 0 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 105979654 + ... + 105981650.

It is an arithmetic number, because the mean of its divisors is an integer number (3964359672).

Almost surely, 2^211643362044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211643362044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285433896384).

211643362044 is an abundant number, since it is smaller than the sum of its proper divisors (359224430724).

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

211643362044 is a wasteful number, since it uses less digits than its factorization.

211643362044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3284 (or 3279 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The spelling of 211643362044 in words is "two hundred eleven billion, six hundred forty-three million, three hundred sixty-two thousand, forty-four".