16573420057 has 2 divisors, whose sum is σ = 16573420058. Its totient is φ = 16573420056.

The previous prime is 16573420049. The next prime is 16573420133. The reversal of 16573420057 is 75002437561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8953701376 + 7619718681 = 94624^2 + 87291^2 .

It is a cyclic number.

It is not a de Polignac number, because 16573420057 - 2³ = 16573420049 is a prime.

It is not a weakly prime, because it can be changed into another prime (16573420657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8286710028 + 8286710029.

It is an arithmetic number, because the mean of its divisors is an integer number (8286710029).

Almost surely, 2^16573420057 is an apocalyptic number.

It is an amenable number.

16573420057 is a deficient number, since it is larger than the sum of its proper divisors (1).

16573420057 is an equidigital number, since it uses as much as digits as its factorization.

16573420057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 176400, while the sum is 40.

The spelling of 16573420057 in words is "sixteen billion, five hundred seventy-three million, four hundred twenty thousand, fifty-seven".