16464212389 has 2 divisors, whose sum is σ = 16464212390. Its totient is φ = 16464212388.

The previous prime is 16464212363. The next prime is 16464212393. The reversal of 16464212389 is 98321246461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15747740100 + 716472289 = 125490^2 + 26767^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16464212389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16464212339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8232106194 + 8232106195.

It is an arithmetic number, because the mean of its divisors is an integer number (8232106195).

Almost surely, 2^16464212389 is an apocalyptic number.

It is an amenable number.

16464212389 is a deficient number, since it is larger than the sum of its proper divisors (1).

16464212389 is an equidigital number, since it uses as much as digits as its factorization.

16464212389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497664, while the sum is 46.

The spelling of 16464212389 in words is "sixteen billion, four hundred sixty-four million, two hundred twelve thousand, three hundred eighty-nine".