16718881741 has 2 divisors, whose sum is σ = 16718881742. Its totient is φ = 16718881740.

The previous prime is 16718881709. The next prime is 16718881763. The reversal of 16718881741 is 14718881761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16532559241 + 186322500 = 128579^2 + 13650^2 .

It is a cyclic number.

It is not a de Polignac number, because 16718881741 - 2⁵ = 16718881709 is a prime.

It is a super-4 number, since 4×16718881741⁴ (a number of 42 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16718881771) 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, 8359440870 + 8359440871.

It is an arithmetic number, because the mean of its divisors is an integer number (8359440871).

Almost surely, 2^16718881741 is an apocalyptic number.

It is an amenable number.

16718881741 is a deficient number, since it is larger than the sum of its proper divisors (1).

16718881741 is an equidigital number, since it uses as much as digits as its factorization.

16718881741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 602112, while the sum is 52.

The spelling of 16718881741 in words is "sixteen billion, seven hundred eighteen million, eight hundred eighty-one thousand, seven hundred forty-one".