211757820038 has 16 divisors (see below), whose sum is σ = 325243288656. Its totient is φ = 103346718720.

The previous prime is 211757819971. The next prime is 211757820041. The reversal of 211757820038 is 830028757112.

It is a Curzon 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, 703931 + ... + 958662.

It is an arithmetic number, because the mean of its divisors is an integer number (20327705541).

Almost surely, 2^211757820038 is an apocalyptic number.

211757820038 is a deficient number, since it is larger than the sum of its proper divisors (113485468618).

211757820038 is a wasteful number, since it uses less digits than its factorization.

211757820038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1664119.

The product of its (nonzero) digits is 188160, while the sum is 44.

The spelling of 211757820038 in words is "two hundred eleven billion, seven hundred fifty-seven million, eight hundred twenty thousand, thirty-eight".