211354623406 has 16 divisors (see below), whose sum is σ = 322612813440. Its totient is φ = 103825343160.

The previous prime is 211354623397. The next prime is 211354623413. The reversal of 211354623406 is 604326453112.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2030050 + ... + 2131621.

It is an arithmetic number, because the mean of its divisors is an integer number (20163300840).

Almost surely, 2^211354623406 is an apocalyptic number.

211354623406 is a deficient number, since it is larger than the sum of its proper divisors (111258190034).

211354623406 is a wasteful number, since it uses less digits than its factorization.

211354623406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4162119.

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 211354623406 in words is "two hundred eleven billion, three hundred fifty-four million, six hundred twenty-three thousand, four hundred six".