16671571054997 has 2 divisors, whose sum is σ = 16671571054998. Its totient is φ = 16671571054996.

The previous prime is 16671571054933. The next prime is 16671571055077. The reversal of 16671571054997 is 79945017517661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16520721155761 + 150849899236 = 4064569^2 + 388394^2 .

It is a cyclic number.

It is not a de Polignac number, because 16671571054997 - 2⁶ = 16671571054933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16671571050997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8335785527498 + 8335785527499.

It is an arithmetic number, because the mean of its divisors is an integer number (8335785527499).

Almost surely, 2^{16671571054997} is an apocalyptic number.

It is an amenable number.

16671571054997 is a deficient number, since it is larger than the sum of its proper divisors (1).

16671571054997 is an equidigital number, since it uses as much as digits as its factorization.

16671571054997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100018800, while the sum is 68.

The spelling of 16671571054997 in words is "sixteen trillion, six hundred seventy-one billion, five hundred seventy-one million, fifty-four thousand, nine hundred ninety-seven".