211944485190 has 64 divisors (see below), whose sum is σ = 523100851200. Its totient is φ = 54936271104.

The previous prime is 211944485189. The next prime is 211944485209. The reversal of 211944485190 is 91584449112.

It is a super-2 number, since 2×211944485190² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 515182 + ... + 830241.

It is an arithmetic number, because the mean of its divisors is an integer number (8173450800).

Almost surely, 2^211944485190 is an apocalyptic number.

211944485190 is an abundant number, since it is smaller than the sum of its proper divisors (311156366010).

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

211944485190 is a wasteful number, since it uses less digits than its factorization.

211944485190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345581.

The product of its (nonzero) digits is 414720, while the sum is 48.

The spelling of 211944485190 in words is "two hundred eleven billion, nine hundred forty-four million, four hundred eighty-five thousand, one hundred ninety".