16781667607 has 16 divisors (see below), whose sum is σ = 17166492000. Its totient is φ = 16402338304.

The previous prime is 16781667601. The next prime is 16781667611. The reversal of 16781667607 is 70676618761.

It is not a de Polignac number, because 16781667607 - 2⁷ = 16781667479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16781667601) 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 in 15 ways as a sum of consecutive naturals, for example, 2753019 + ... + 2759107.

It is an arithmetic number, because the mean of its divisors is an integer number (1072905750).

Almost surely, 2^16781667607 is an apocalyptic number.

16781667607 is a deficient number, since it is larger than the sum of its proper divisors (384824393).

16781667607 is a wasteful number, since it uses less digits than its factorization.

16781667607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6530.

The product of its (nonzero) digits is 3556224, while the sum is 55.

The spelling of 16781667607 in words is "sixteen billion, seven hundred eighty-one million, six hundred sixty-seven thousand, six hundred seven".