212644362336487 has 2 divisors, whose sum is σ = 212644362336488. Its totient is φ = 212644362336486.

The previous prime is 212644362336457. The next prime is 212644362336631. The reversal of 212644362336487 is 784633263446212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212644362336487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212644362336457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106322181168243 + 106322181168244.

It is an arithmetic number, because the mean of its divisors is an integer number (106322181168244).

Almost surely, 2^{212644362336487} is an apocalyptic number.

212644362336487 is a deficient number, since it is larger than the sum of its proper divisors (1).

212644362336487 is an equidigital number, since it uses as much as digits as its factorization.

212644362336487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 167215104, while the sum is 61.

The spelling of 212644362336487 in words is "two hundred twelve trillion, six hundred forty-four billion, three hundred sixty-two million, three hundred thirty-six thousand, four hundred eighty-seven".