211495650534 has 120 divisors (see below), whose sum is σ = 551535985440. Its totient is φ = 60399216864.

The previous prime is 211495650533. The next prime is 211495650559. The reversal of 211495650534 is 435056594112.

It is a happy number.

211495650534 is a `hidden beast` number, since 2 + 1 + 14 + 9 + 56 + 50 + 534 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 211495650534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211495650533) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 21959632 + ... + 21969260.

It is an arithmetic number, because the mean of its divisors is an integer number (4596133212).

Almost surely, 2^211495650534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211495650534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275767992720).

211495650534 is an abundant number, since it is smaller than the sum of its proper divisors (340040334906).

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

211495650534 is a wasteful number, since it uses less digits than its factorization.

211495650534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12424 (or 12408 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The spelling of 211495650534 in words is "two hundred eleven billion, four hundred ninety-five million, six hundred fifty thousand, five hundred thirty-four".