211306166400451 has 2 divisors, whose sum is σ = 211306166400452. Its totient is φ = 211306166400450.

The previous prime is 211306166400353. The next prime is 211306166400577. The reversal of 211306166400451 is 154004661603112.

211306166400451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211306166400451 - 2¹¹ = 211306166398403 is a prime.

It is not a weakly prime, because it can be changed into another prime (211306166404451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105653083200225 + 105653083200226.

It is an arithmetic number, because the mean of its divisors is an integer number (105653083200226).

Almost surely, 2^{211306166400451} is an apocalyptic number.

211306166400451 is a deficient number, since it is larger than the sum of its proper divisors (1).

211306166400451 is an equidigital number, since it uses as much as digits as its factorization.

211306166400451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 211306166400451 in words is "two hundred eleven trillion, three hundred six billion, one hundred sixty-six million, four hundred thousand, four hundred fifty-one".