212451453563 has 2 divisors, whose sum is σ = 212451453564. Its totient is φ = 212451453562.

The previous prime is 212451453517. The next prime is 212451453589. The reversal of 212451453563 is 365354154212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212451453563 - 2⁶ = 212451453499 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212451453563.

It is not a weakly prime, because it can be changed into another prime (212451458563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106225726781 + 106225726782.

It is an arithmetic number, because the mean of its divisors is an integer number (106225726782).

Almost surely, 2^212451453563 is an apocalyptic number.

212451453563 is a deficient number, since it is larger than the sum of its proper divisors (1).

212451453563 is an equidigital number, since it uses as much as digits as its factorization.

212451453563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432000, while the sum is 41.

The spelling of 212451453563 in words is "two hundred twelve billion, four hundred fifty-one million, four hundred fifty-three thousand, five hundred sixty-three".