211489398946 has 32 divisors (see below), whose sum is σ = 365484948480. Its totient is φ = 89907138000.

The previous prime is 211489398917. The next prime is 211489399039. The reversal of 211489398946 is 649893984112.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 1388385 + ... + 1533163.

It is an arithmetic number, because the mean of its divisors is an integer number (11421404640).

Almost surely, 2^211489398946 is an apocalyptic number.

211489398946 is a deficient number, since it is larger than the sum of its proper divisors (153995549534).

211489398946 is a wasteful number, since it uses less digits than its factorization.

211489398946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145630.

The product of its digits is 26873856, while the sum is 64.

The spelling of 211489398946 in words is "two hundred eleven billion, four hundred eighty-nine million, three hundred ninety-eight thousand, nine hundred forty-six".