16463141764721 has 2 divisors, whose sum is σ = 16463141764722. Its totient is φ = 16463141764720.

The previous prime is 16463141764679. The next prime is 16463141764781. The reversal of 16463141764721 is 12746714136461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15637587804721 + 825553960000 = 3954439^2 + 908600^2 .

It is a cyclic number.

It is not a de Polignac number, because 16463141764721 - 2¹⁴ = 16463141748337 is a prime.

It is not a weakly prime, because it can be changed into another prime (16463141764781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8231570882360 + 8231570882361.

It is an arithmetic number, because the mean of its divisors is an integer number (8231570882361).

Almost surely, 2^{16463141764721} is an apocalyptic number.

It is an amenable number.

16463141764721 is a deficient number, since it is larger than the sum of its proper divisors (1).

16463141764721 is an equidigital number, since it uses as much as digits as its factorization.

16463141764721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4064256, while the sum is 53.

The spelling of 16463141764721 in words is "sixteen trillion, four hundred sixty-three billion, one hundred forty-one million, seven hundred sixty-four thousand, seven hundred twenty-one".