16553415377 has 2 divisors, whose sum is σ = 16553415378. Its totient is φ = 16553415376.

The previous prime is 16553415289. The next prime is 16553415379. The reversal of 16553415377 is 77351435561.

16553415377 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14428574161 + 2124841216 = 120119^2 + 46096^2 .

It is a cyclic number.

It is not a de Polignac number, because 16553415377 - 2²⁴ = 16536638161 is a prime.

Together with 16553415379, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16553415379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8276707688 + 8276707689.

It is an arithmetic number, because the mean of its divisors is an integer number (8276707689).

Almost surely, 2^16553415377 is an apocalyptic number.

It is an amenable number.

16553415377 is a deficient number, since it is larger than the sum of its proper divisors (1).

16553415377 is an equidigital number, since it uses as much as digits as its factorization.

16553415377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1323000, while the sum is 47.

The spelling of 16553415377 in words is "sixteen billion, five hundred fifty-three million, four hundred fifteen thousand, three hundred seventy-seven".