16577453123887 has 2 divisors, whose sum is σ = 16577453123888. Its totient is φ = 16577453123886.

The previous prime is 16577453123809. The next prime is 16577453123921. The reversal of 16577453123887 is 78832135477561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16577453123887 - 2¹⁵ = 16577453091119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16577453123807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8288726561943 + 8288726561944.

It is an arithmetic number, because the mean of its divisors is an integer number (8288726561944).

Almost surely, 2^{16577453123887} is an apocalyptic number.

16577453123887 is a deficient number, since it is larger than the sum of its proper divisors (1).

16577453123887 is an equidigital number, since it uses as much as digits as its factorization.

16577453123887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 237081600, while the sum is 67.

The spelling of 16577453123887 in words is "sixteen trillion, five hundred seventy-seven billion, four hundred fifty-three million, one hundred twenty-three thousand, eight hundred eighty-seven".