16557377063 has 2 divisors, whose sum is σ = 16557377064. Its totient is φ = 16557377062.

The previous prime is 16557377051. The next prime is 16557377101. The reversal of 16557377063 is 36077375561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16557377063 - 2¹² = 16557372967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16557377033) 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, 8278688531 + 8278688532.

It is an arithmetic number, because the mean of its divisors is an integer number (8278688532).

Almost surely, 2^16557377063 is an apocalyptic number.

16557377063 is a deficient number, since it is larger than the sum of its proper divisors (1).

16557377063 is an equidigital number, since it uses as much as digits as its factorization.

16557377063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2778300, while the sum is 50.

The spelling of 16557377063 in words is "sixteen billion, five hundred fifty-seven million, three hundred seventy-seven thousand, sixty-three".