16461066267389 has 2 divisors, whose sum is σ = 16461066267390. Its totient is φ = 16461066267388.

The previous prime is 16461066267301. The next prime is 16461066267397. The reversal of 16461066267389 is 98376266016461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15092704414489 + 1368361852900 = 3884933^2 + 1169770^2 .

It is a cyclic number.

It is not a de Polignac number, because 16461066267389 - 2²⁴ = 16461049490173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16461066267589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8230533133694 + 8230533133695.

It is an arithmetic number, because the mean of its divisors is an integer number (8230533133695).

Almost surely, 2^{16461066267389} is an apocalyptic number.

It is an amenable number.

16461066267389 is a deficient number, since it is larger than the sum of its proper divisors (1).

16461066267389 is an equidigital number, since it uses as much as digits as its factorization.

16461066267389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94058496, while the sum is 65.

The spelling of 16461066267389 in words is "sixteen trillion, four hundred sixty-one billion, sixty-six million, two hundred sixty-seven thousand, three hundred eighty-nine".