16716124457 has 2 divisors, whose sum is σ = 16716124458. Its totient is φ = 16716124456.

The previous prime is 16716124417. The next prime is 16716124471. The reversal of 16716124457 is 75442161761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10075341376 + 6640783081 = 100376^2 + 81491^2 .

It is an emirp because it is prime and its reverse (75442161761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16716124457 - 2¹⁶ = 16716058921 is a prime.

It is not a weakly prime, because it can be changed into another prime (16716124417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8358062228 + 8358062229.

It is an arithmetic number, because the mean of its divisors is an integer number (8358062229).

Almost surely, 2^16716124457 is an apocalyptic number.

It is an amenable number.

16716124457 is a deficient number, since it is larger than the sum of its proper divisors (1).

16716124457 is an equidigital number, since it uses as much as digits as its factorization.

16716124457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 44.

The spelling of 16716124457 in words is "sixteen billion, seven hundred sixteen million, one hundred twenty-four thousand, four hundred fifty-seven".