211656468892 has 24 divisors (see below), whose sum is σ = 404172769392. Its totient is φ = 96183360000.

The previous prime is 211656468853. The next prime is 211656468901. The reversal of 211656468892 is 298864656112.

It is a happy number.

It is a congruent number.

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, 425103 + ... + 777190.

It is an arithmetic number, because the mean of its divisors is an integer number (16840532058).

Almost surely, 2^211656468892 is an apocalyptic number.

211656468892 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

211656468892 is a deficient number, since it is larger than the sum of its proper divisors (192516300500).

211656468892 is a wasteful number, since it uses less digits than its factorization.

211656468892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206309 (or 1206307 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 58.

The spelling of 211656468892 in words is "two hundred eleven billion, six hundred fifty-six million, four hundred sixty-eight thousand, eight hundred ninety-two".