16853838457 has 2 divisors, whose sum is σ = 16853838458. Its totient is φ = 16853838456.

The previous prime is 16853838431. The next prime is 16853838467. The reversal of 16853838457 is 75483835861.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15442784361 + 1411054096 = 124269^2 + 37564^2 .

It is a cyclic number.

It is not a de Polignac number, because 16853838457 - 2⁷ = 16853838329 is a prime.

It is not a weakly prime, because it can be changed into another prime (16853838467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8426919228 + 8426919229.

It is an arithmetic number, because the mean of its divisors is an integer number (8426919229).

Almost surely, 2^16853838457 is an apocalyptic number.

It is an amenable number.

16853838457 is a deficient number, since it is larger than the sum of its proper divisors (1).

16853838457 is an equidigital number, since it uses as much as digits as its factorization.

16853838457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19353600, while the sum is 58.

The spelling of 16853838457 in words is "sixteen billion, eight hundred fifty-three million, eight hundred thirty-eight thousand, four hundred fifty-seven".