16506054077 has 2 divisors, whose sum is σ = 16506054078. Its totient is φ = 16506054076.

The previous prime is 16506054031. The next prime is 16506054079. The reversal of 16506054077 is 77045060561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16034903641 + 471150436 = 126629^2 + 21706^2 .

It is a cyclic number.

It is not a de Polignac number, because 16506054077 - 2⁸ = 16506053821 is a prime.

Together with 16506054079, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16506054079) 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, 8253027038 + 8253027039.

It is an arithmetic number, because the mean of its divisors is an integer number (8253027039).

Almost surely, 2^16506054077 is an apocalyptic number.

It is an amenable number.

16506054077 is a deficient number, since it is larger than the sum of its proper divisors (1).

16506054077 is an equidigital number, since it uses as much as digits as its factorization.

16506054077 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 41.

The spelling of 16506054077 in words is "sixteen billion, five hundred six million, fifty-four thousand, seventy-seven".