211999494672 has 480 divisors, whose sum is σ = 718838824704. Its totient is φ = 59234457600.

The previous prime is 211999494661. The next prime is 211999494769. The reversal of 211999494672 is 276494999112.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 459868522 + ... + 459868982.

Almost surely, 2^211999494672 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 211999494672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359419412352).

211999494672 is an abundant number, since it is smaller than the sum of its proper divisors (506839330032).

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

211999494672 is a wasteful number, since it uses less digits than its factorization.

211999494672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829 (or 811 counting only the distinct ones).

The product of its digits is 17635968, while the sum is 63.

The spelling of 211999494672 in words is "two hundred eleven billion, nine hundred ninety-nine million, four hundred ninety-four thousand, six hundred seventy-two".