211949603964 has 48 divisors (see below), whose sum is σ = 627998828800. Its totient is φ = 60557029488.

The previous prime is 211949603963. The next prime is 211949603989. The reversal of 211949603964 is 469306949112.

It is a happy number.

211949603964 is a `hidden beast` number, since 2 + 1 + 194 + 9 + 60 + 396 + 4 = 666.

211949603964 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 211949603964.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211949603963) by changing a digit.

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, 140177554 + ... + 140179065.

Almost surely, 2^211949603964 is an apocalyptic number.

It is an amenable number.

211949603964 is an abundant number, since it is smaller than the sum of its proper divisors (416049224836).

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

211949603964 is a wasteful number, since it uses less digits than its factorization.

211949603964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280356639 (or 280356631 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 54.

The spelling of 211949603964 in words is "two hundred eleven billion, nine hundred forty-nine million, six hundred three thousand, nine hundred sixty-four".