212356441663 has 2 divisors, whose sum is σ = 212356441664. Its totient is φ = 212356441662.

The previous prime is 212356441597. The next prime is 212356441667. The reversal of 212356441663 is 366144653212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212356441663 - 2²¹ = 212354344511 is a prime.

It is a super-2 number, since 2×212356441663² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212356441667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106178220831 + 106178220832.

It is an arithmetic number, because the mean of its divisors is an integer number (106178220832).

Almost surely, 2^212356441663 is an apocalyptic number.

212356441663 is a deficient number, since it is larger than the sum of its proper divisors (1).

212356441663 is an equidigital number, since it uses as much as digits as its factorization.

212356441663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 43.

The spelling of 212356441663 in words is "two hundred twelve billion, three hundred fifty-six million, four hundred forty-one thousand, six hundred sixty-three".