16751866041 has 45 divisors (see below), whose sum is σ = 25501333341. Its totient is φ = 10959012288.

The previous prime is 16751865973. The next prime is 16751866063. The reversal of 16751866041 is 14066815761.

The square root of 16751866041 is 129429.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 7128256041 + 9623610000 = 84429^2 + 98100^2 .

It is not a de Polignac number, because 16751866041 - 2²³ = 16743477433 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16751066041) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 85034755 + ... + 85034951.

Almost surely, 2^16751866041 is an apocalyptic number.

16751866041 is the 129429-th square number.

16751866041 is the 64715-th centered octagonal number.

It is an amenable number.

16751866041 is a deficient number, since it is larger than the sum of its proper divisors (8749467300).

16751866041 is an frugal number, since it uses more digits than its factorization.

16751866041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 16751866041 in words is "sixteen billion, seven hundred fifty-one million, eight hundred sixty-six thousand, forty-one".