211957910054 has 8 divisors (see below), whose sum is σ = 346840216488. Its totient is φ = 96344504560.

The previous prime is 211957910027. The next prime is 211957910083. The reversal of 211957910054 is 450019759112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 211957909987 and 211957910014.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4817225207 + ... + 4817225250.

It is an arithmetic number, because the mean of its divisors is an integer number (43355027061).

Almost surely, 2^211957910054 is an apocalyptic number.

211957910054 is a deficient number, since it is larger than the sum of its proper divisors (134882306434).

211957910054 is a wasteful number, since it uses less digits than its factorization.

211957910054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9634450470.

The product of its (nonzero) digits is 113400, while the sum is 44.

The spelling of 211957910054 in words is "two hundred eleven billion, nine hundred fifty-seven million, nine hundred ten thousand, fifty-four".