212074653617 has 2 divisors, whose sum is σ = 212074653618. Its totient is φ = 212074653616.

The previous prime is 212074653613. The next prime is 212074653683. The reversal of 212074653617 is 716356470212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146536605601 + 65538048016 = 382801^2 + 256004^2 .

It is a cyclic number.

It is not a de Polignac number, because 212074653617 - 2² = 212074653613 is a prime.

It is not a weakly prime, because it can be changed into another prime (212074653613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106037326808 + 106037326809.

It is an arithmetic number, because the mean of its divisors is an integer number (106037326809).

Almost surely, 2^212074653617 is an apocalyptic number.

It is an amenable number.

212074653617 is a deficient number, since it is larger than the sum of its proper divisors (1).

212074653617 is an equidigital number, since it uses as much as digits as its factorization.

212074653617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 212074653617 in words is "two hundred twelve billion, seventy-four million, six hundred fifty-three thousand, six hundred seventeen".