211386316749479 has 2 divisors, whose sum is σ = 211386316749480. Its totient is φ = 211386316749478.

The previous prime is 211386316749409. The next prime is 211386316749499. The reversal of 211386316749479 is 974947613683112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211386316749479 is a prime.

It is a super-2 number, since 2×211386316749479² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211386316749409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105693158374739 + 105693158374740.

It is an arithmetic number, because the mean of its divisors is an integer number (105693158374740).

Almost surely, 2^{211386316749479} is an apocalyptic number.

211386316749479 is a deficient number, since it is larger than the sum of its proper divisors (1).

211386316749479 is an equidigital number, since it uses as much as digits as its factorization.

211386316749479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 329204736, while the sum is 71.

The spelling of 211386316749479 in words is "two hundred eleven trillion, three hundred eighty-six billion, three hundred sixteen million, seven hundred forty-nine thousand, four hundred seventy-nine".