211432771867 has 2 divisors, whose sum is σ = 211432771868. Its totient is φ = 211432771866.

The previous prime is 211432771861. The next prime is 211432771889. The reversal of 211432771867 is 768177234112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211432771867 - 2³ = 211432771859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211432771867.

It is not a weakly prime, because it can be changed into another prime (211432771861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105716385933 + 105716385934.

It is an arithmetic number, because the mean of its divisors is an integer number (105716385934).

Almost surely, 2^211432771867 is an apocalyptic number.

211432771867 is a deficient number, since it is larger than the sum of its proper divisors (1).

211432771867 is an equidigital number, since it uses as much as digits as its factorization.

211432771867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 790272, while the sum is 49.

The spelling of 211432771867 in words is "two hundred eleven billion, four hundred thirty-two million, seven hundred seventy-one thousand, eight hundred sixty-seven".