211172749063 has 2 divisors, whose sum is σ = 211172749064. Its totient is φ = 211172749062.

The previous prime is 211172749043. The next prime is 211172749091. The reversal of 211172749063 is 360947271112.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211172749063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211172749043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105586374531 + 105586374532.

It is an arithmetic number, because the mean of its divisors is an integer number (105586374532).

Almost surely, 2^211172749063 is an apocalyptic number.

211172749063 is a deficient number, since it is larger than the sum of its proper divisors (1).

211172749063 is an equidigital number, since it uses as much as digits as its factorization.

211172749063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 43.

The spelling of 211172749063 in words is "two hundred eleven billion, one hundred seventy-two million, seven hundred forty-nine thousand, sixty-three".