16256321768419 has 2 divisors, whose sum is σ = 16256321768420. Its totient is φ = 16256321768418.

The previous prime is 16256321768399. The next prime is 16256321768473. The reversal of 16256321768419 is 91486712365261.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16256321768419 - 2⁵ = 16256321768387 is a prime.

It is a super-2 number, since 2×16256321768419² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16256321763419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8128160884209 + 8128160884210.

It is an arithmetic number, because the mean of its divisors is an integer number (8128160884210).

Almost surely, 2^{16256321768419} is an apocalyptic number.

16256321768419 is a deficient number, since it is larger than the sum of its proper divisors (1).

16256321768419 is an equidigital number, since it uses as much as digits as its factorization.

16256321768419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26127360, while the sum is 61.

The spelling of 16256321768419 in words is "sixteen trillion, two hundred fifty-six billion, three hundred twenty-one million, seven hundred sixty-eight thousand, four hundred nineteen".