211404100432 has 80 divisors (see below), whose sum is σ = 484547399680. Its totient is φ = 87458724864.

The previous prime is 211404100363. The next prime is 211404100471. The reversal of 211404100432 is 234001404112.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 325444 + ... + 727132.

It is an arithmetic number, because the mean of its divisors is an integer number (6056842496).

Almost surely, 2^211404100432 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 211404100432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242273699840).

211404100432 is an abundant number, since it is smaller than the sum of its proper divisors (273143299248).

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

211404100432 is a wasteful number, since it uses less digits than its factorization.

211404100432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401868 (or 401862 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 211404100432 its reverse (234001404112), we get a palindrome (445405504544).

The spelling of 211404100432 in words is "two hundred eleven billion, four hundred four million, one hundred thousand, four hundred thirty-two".