211420164004 has 24 divisors (see below), whose sum is σ = 423428463360. Its totient is φ = 90482612736.

The previous prime is 211420163993. The next prime is 211420164031. The reversal of 211420164004 is 400461024112.

It is a self number, because there is not a number n which added to its sum of digits gives 211420164004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5230717 + ... + 5270980.

It is an arithmetic number, because the mean of its divisors is an integer number (17642852640).

Almost surely, 2^211420164004 is an apocalyptic number.

It is an amenable number.

211420164004 is an abundant number, since it is smaller than the sum of its proper divisors (212008299356).

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

211420164004 is a wasteful number, since it uses less digits than its factorization.

211420164004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10502427 (or 10502425 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 211420164004 its reverse (400461024112), we get a palindrome (611881188116).

The spelling of 211420164004 in words is "two hundred eleven billion, four hundred twenty million, one hundred sixty-four thousand, four".