16720744141 has 2 divisors, whose sum is σ = 16720744142. Its totient is φ = 16720744140.

The previous prime is 16720744093. The next prime is 16720744147. The reversal of 16720744141 is 14144702761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16566264100 + 154480041 = 128710^2 + 12429^2 .

It is a cyclic number.

It is not a de Polignac number, because 16720744141 - 2⁷ = 16720744013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16720744141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16720744147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8360372070 + 8360372071.

It is an arithmetic number, because the mean of its divisors is an integer number (8360372071).

Almost surely, 2^16720744141 is an apocalyptic number.

It is an amenable number.

16720744141 is a deficient number, since it is larger than the sum of its proper divisors (1).

16720744141 is an equidigital number, since it uses as much as digits as its factorization.

16720744141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37632, while the sum is 37.

The spelling of 16720744141 in words is "sixteen billion, seven hundred twenty million, seven hundred forty-four thousand, one hundred forty-one".