16661754463 has 2 divisors, whose sum is σ = 16661754464. Its totient is φ = 16661754462.

The previous prime is 16661754457. The next prime is 16661754467. The reversal of 16661754463 is 36445716661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16661754463 - 2³³ = 8071819871 is a prime.

It is a super-2 number, since 2×16661754463² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16661754467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8330877231 + 8330877232.

It is an arithmetic number, because the mean of its divisors is an integer number (8330877232).

Almost surely, 2^16661754463 is an apocalyptic number.

16661754463 is a deficient number, since it is larger than the sum of its proper divisors (1).

16661754463 is an equidigital number, since it uses as much as digits as its factorization.

16661754463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 49.

The spelling of 16661754463 in words is "sixteen billion, six hundred sixty-one million, seven hundred fifty-four thousand, four hundred sixty-three".