16611466126481 has 2 divisors, whose sum is σ = 16611466126482. Its totient is φ = 16611466126480.

The previous prime is 16611466126439. The next prime is 16611466126501. The reversal of 16611466126481 is 18462166411661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13144366266256 + 3467099860225 = 3625516^2 + 1862015^2 .

It is a cyclic number.

It is not a de Polignac number, because 16611466126481 - 2¹⁸ = 16611465864337 is a prime.

It is a super-2 number, since 2×16611466126481² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16611466126421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8305733063240 + 8305733063241.

It is an arithmetic number, because the mean of its divisors is an integer number (8305733063241).

Almost surely, 2^{16611466126481} is an apocalyptic number.

It is an amenable number.

16611466126481 is a deficient number, since it is larger than the sum of its proper divisors (1).

16611466126481 is an equidigital number, since it uses as much as digits as its factorization.

16611466126481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1990656, while the sum is 53.

The spelling of 16611466126481 in words is "sixteen trillion, six hundred eleven billion, four hundred sixty-six million, one hundred twenty-six thousand, four hundred eighty-one".