211551233564342 has 64 divisors (see below), whose sum is σ = 370798976448000. Its totient is φ = 90484008642720.

The previous prime is 211551233564309. The next prime is 211551233564369. The reversal of 211551233564342 is 243465332155112.

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 31 ways as a sum of consecutive naturals, for example, 975992117 + ... + 976208847.

It is an arithmetic number, because the mean of its divisors is an integer number (5793734007000).

Almost surely, 2^{211551233564342} is an apocalyptic number.

211551233564342 is a deficient number, since it is larger than the sum of its proper divisors (159247742883658).

211551233564342 is a wasteful number, since it uses less digits than its factorization.

211551233564342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219586 (or 219572 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 47.

The spelling of 211551233564342 in words is "two hundred eleven trillion, five hundred fifty-one billion, two hundred thirty-three million, five hundred sixty-four thousand, three hundred forty-two".