16872053729 has 2 divisors, whose sum is σ = 16872053730. Its totient is φ = 16872053728.

The previous prime is 16872053711. The next prime is 16872053777. The reversal of 16872053729 is 92735027861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16709440225 + 162613504 = 129265^2 + 12752^2 .

It is a cyclic number.

It is not a de Polignac number, because 16872053729 - 2³² = 12577086433 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (16872053129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8436026864 + 8436026865.

It is an arithmetic number, because the mean of its divisors is an integer number (8436026865).

Almost surely, 2^16872053729 is an apocalyptic number.

It is an amenable number.

16872053729 is a deficient number, since it is larger than the sum of its proper divisors (1).

16872053729 is an equidigital number, since it uses as much as digits as its factorization.

16872053729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 16872053729 in words is "sixteen billion, eight hundred seventy-two million, fifty-three thousand, seven hundred twenty-nine".