211780423143 has 12 divisors (see below), whose sum is σ = 315772961088. Its totient is φ = 136632530880.

The previous prime is 211780423111. The next prime is 211780423171. The reversal of 211780423143 is 341324087112.

211780423143 is a `hidden beast` number, since 2 + 1 + 17 + 80 + 423 + 143 = 666.

It is not a de Polignac number, because 211780423143 - 2⁵ = 211780423111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211780423098 and 211780423107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211780423193) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 379534530 + ... + 379535087.

It is an arithmetic number, because the mean of its divisors is an integer number (26314413424).

Almost surely, 2^211780423143 is an apocalyptic number.

211780423143 is a deficient number, since it is larger than the sum of its proper divisors (103992537945).

211780423143 is a wasteful number, since it uses less digits than its factorization.

211780423143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759069654 (or 759069651 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The spelling of 211780423143 in words is "two hundred eleven billion, seven hundred eighty million, four hundred twenty-three thousand, one hundred forty-three".