211655136552 has 64 divisors (see below), whose sum is σ = 545771753280. Its totient is φ = 68350228992.

The previous prime is 211655136527. The next prime is 211655136593. The reversal of 211655136552 is 255631556112.

It is a happy 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, 304578 + ... + 718385.

It is an arithmetic number, because the mean of its divisors is an integer number (8527683645).

Almost surely, 2^211655136552 is an apocalyptic number.

It is an amenable number.

211655136552 is an abundant number, since it is smaller than the sum of its proper divisors (334116616728).

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

211655136552 is a wasteful number, since it uses less digits than its factorization.

211655136552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023242 (or 1023238 counting only the distinct ones).

The product of its digits is 270000, while the sum is 42.

The spelling of 211655136552 in words is "two hundred eleven billion, six hundred fifty-five million, one hundred thirty-six thousand, five hundred fifty-two".