211455115340146 has 4 divisors (see below), whose sum is σ = 317182673010222. Its totient is φ = 105727557670072.

The previous prime is 211455115340111. The next prime is 211455115340237. The reversal of 211455115340146 is 641043511554112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 161967900208921 + 49487215131225 = 12726661^2 + 7034715^2 .

It is a super-3 number, since 3×211455115340146³ (a number of 44 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52863778835035 + ... + 52863778835038.

Almost surely, 2^{211455115340146} is an apocalyptic number.

211455115340146 is a deficient number, since it is larger than the sum of its proper divisors (105727557670076).

211455115340146 is a wasteful number, since it uses less digits than its factorization.

211455115340146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105727557670075.

The product of its (nonzero) digits is 288000, while the sum is 43.

Adding to 211455115340146 its reverse (641043511554112), we get a palindrome (852498626894258).

The spelling of 211455115340146 in words is "two hundred eleven trillion, four hundred fifty-five billion, one hundred fifteen million, three hundred forty thousand, one hundred forty-six".