16897422877 has 2 divisors, whose sum is σ = 16897422878. Its totient is φ = 16897422876.

The previous prime is 16897422793. The next prime is 16897422881. The reversal of 16897422877 is 77822479861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9925339876 + 6972083001 = 99626^2 + 83499^2 .

It is a cyclic number.

It is not a de Polignac number, because 16897422877 - 2⁷ = 16897422749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16897422887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8448711438 + 8448711439.

It is an arithmetic number, because the mean of its divisors is an integer number (8448711439).

Almost surely, 2^16897422877 is an apocalyptic number.

It is an amenable number.

16897422877 is a deficient number, since it is larger than the sum of its proper divisors (1).

16897422877 is an equidigital number, since it uses as much as digits as its factorization.

16897422877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18966528, while the sum is 61.

The spelling of 16897422877 in words is "sixteen billion, eight hundred ninety-seven million, four hundred twenty-two thousand, eight hundred seventy-seven".