211553270055 has 144 divisors (see below), whose sum is σ = 386667665280. Its totient is φ = 106957493760.

The previous prime is 211553270053. The next prime is 211553270077. The reversal of 211553270055 is 550072355112.

211553270055 is a `hidden beast` number, since 2 + 1 + 1 + 5 + 532 + 70 + 0 + 55 = 666.

It is not a de Polignac number, because 211553270055 - 2¹ = 211553270053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211553270053) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 477546664 + ... + 477547106.

It is an arithmetic number, because the mean of its divisors is an integer number (2685192120).

Almost surely, 2^211553270055 is an apocalyptic number.

211553270055 is a deficient number, since it is larger than the sum of its proper divisors (175114395225).

211553270055 is a wasteful number, since it uses less digits than its factorization.

211553270055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702 (or 658 counting only the distinct ones).

The product of its (nonzero) digits is 52500, while the sum is 36.

The spelling of 211553270055 in words is "two hundred eleven billion, five hundred fifty-three million, two hundred seventy thousand, fifty-five".