211545645135 has 32 divisors (see below), whose sum is σ = 385297371648. Its totient is φ = 98108123520.

The previous prime is 211545645127. The next prime is 211545645169. The reversal of 211545645135 is 531546545112.

It is not a de Polignac number, because 211545645135 - 2³ = 211545645127 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27867832 + ... + 27875421.

It is an arithmetic number, because the mean of its divisors is an integer number (12040542864).

Almost surely, 2^211545645135 is an apocalyptic number.

211545645135 is a deficient number, since it is larger than the sum of its proper divisors (173751726513).

211545645135 is a wasteful number, since it uses less digits than its factorization.

211545645135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55743295.

The product of its digits is 360000, while the sum is 42.

The spelling of 211545645135 in words is "two hundred eleven billion, five hundred forty-five million, six hundred forty-five thousand, one hundred thirty-five".