16654061549 has 2 divisors, whose sum is σ = 16654061550. Its totient is φ = 16654061548.

The previous prime is 16654061533. The next prime is 16654061573. The reversal of 16654061549 is 94516045661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16601034025 + 53027524 = 128845^2 + 7282^2 .

It is a cyclic number.

It is not a de Polignac number, because 16654061549 - 2⁴ = 16654061533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16654001549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8327030774 + 8327030775.

It is an arithmetic number, because the mean of its divisors is an integer number (8327030775).

Almost surely, 2^16654061549 is an apocalyptic number.

It is an amenable number.

16654061549 is a deficient number, since it is larger than the sum of its proper divisors (1).

16654061549 is an equidigital number, since it uses as much as digits as its factorization.

16654061549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 777600, while the sum is 47.

The spelling of 16654061549 in words is "sixteen billion, six hundred fifty-four million, sixty-one thousand, five hundred forty-nine".