16573412323997 has 2 divisors, whose sum is σ = 16573412323998. Its totient is φ = 16573412323996.

The previous prime is 16573412323991. The next prime is 16573412324197. The reversal of 16573412323997 is 79932321437561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10983053336761 + 5590358987236 = 3314069^2 + 2364394^2 .

It is a cyclic number.

It is not a de Polignac number, because 16573412323997 - 2²² = 16573408129693 is a prime.

It is a super-2 number, since 2×16573412323997² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16573412323991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8286706161998 + 8286706161999.

It is an arithmetic number, because the mean of its divisors is an integer number (8286706161999).

Almost surely, 2^{16573412323997} is an apocalyptic number.

It is an amenable number.

16573412323997 is a deficient number, since it is larger than the sum of its proper divisors (1).

16573412323997 is an equidigital number, since it uses as much as digits as its factorization.

16573412323997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51438240, while the sum is 62.

The spelling of 16573412323997 in words is "sixteen trillion, five hundred seventy-three billion, four hundred twelve million, three hundred twenty-three thousand, nine hundred ninety-seven".