211465046640636 has 240 divisors, whose sum is σ = 572016944312352. Its totient is φ = 68068304640000.

The previous prime is 211465046640619. The next prime is 211465046640637. The reversal of 211465046640636 is 636046640564112.

211465046640636 is a `hidden beast` number, since 2 + 1 + 1 + 4 + 6 + 504 + 66 + 40 + 6 + 36 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211465046640637) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 10069274136 + ... + 10069295136.

Almost surely, 2^{211465046640636} 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 211465046640636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286008472156176).

211465046640636 is an abundant number, since it is smaller than the sum of its proper divisors (360551897671716).

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

211465046640636 is a wasteful number, since it uses less digits than its factorization.

211465046640636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27322 (or 27311 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 54.

The spelling of 211465046640636 in words is "two hundred eleven trillion, four hundred sixty-five billion, forty-six million, six hundred forty thousand, six hundred thirty-six".