211319918679864 has 64 divisors (see below), whose sum is σ = 533664510458400. Its totient is φ = 69726290579456.

The previous prime is 211319918679809. The next prime is 211319918679997. The reversal of 211319918679864 is 468976819913112.

It is a super-2 number, since 2×211319918679864² (a number of 29 digits) contains 22 as substring.

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, 48304869 + ... + 52497620.

Almost surely, 2^{211319918679864} is an apocalyptic number.

211319918679864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

211319918679864 is an abundant number, since it is smaller than the sum of its proper divisors (322344591778536).

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

211319918679864 is a wasteful number, since it uses less digits than its factorization.

211319918679864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100803384 (or 100803380 counting only the distinct ones).

The product of its digits is 282175488, while the sum is 75.

The spelling of 211319918679864 in words is "two hundred eleven trillion, three hundred nineteen billion, nine hundred eighteen million, six hundred seventy-nine thousand, eight hundred sixty-four".