211256953488885 has 16 divisors (see below), whose sum is σ = 338234825900160. Its totient is φ = 112595808421440.

The previous prime is 211256953488883. The next prime is 211256953488899. The reversal of 211256953488885 is 588884359652112.

It is not a de Polignac number, because 211256953488885 - 2¹ = 211256953488883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211256953488883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4660399870 + ... + 4660445199.

It is an arithmetic number, because the mean of its divisors is an integer number (21139676618760).

Almost surely, 2^{211256953488885} is an apocalyptic number.

It is an amenable number.

211256953488885 is a deficient number, since it is larger than the sum of its proper divisors (126977872411275).

211256953488885 is a wasteful number, since it uses less digits than its factorization.

211256953488885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9320846588.

The product of its digits is 1327104000, while the sum is 75.

The spelling of 211256953488885 in words is "two hundred eleven trillion, two hundred fifty-six billion, nine hundred fifty-three million, four hundred eighty-eight thousand, eight hundred eighty-five".